| Sierra 3500HD SLT 4dr Double LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2018 | 6000 ccm | 365 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab LB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab LB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Double Cab SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2018 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2018 | 4300 ccm | 289 | - | - |
| Sierra 3500HD SLT 4dr Double LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2017 | 6000 ccm | 365 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab LB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab LB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Double Cab SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2017 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2017 | 4300 ccm | 289 | - | - |
| Sierra 3500HD SLT 4dr Double LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLT 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLT 4dr Double Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Double Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLT 4dr Double Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 181 | 228 | 135.0 |
| Sierra 3500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2016 | 6000 ccm | 365 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab LB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab LB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Double Cab SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2016 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2016 | 4300 ccm | 289 | - | - |
| Sierra 3500HD SLT 4dr Double LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Double Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab SB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Double Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD 4dr Double Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2015 | 6000 ccm | 365 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab LB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab LB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Double Cab SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2015 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2015 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab LB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 2dr Regular Cab SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab LB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 2dr Regular Cab 4WD SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 2dr Regular Cab 4WD LB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLE 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Double Cab SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLE 4dr Double Cab SB (4.3L 6cyl 6A) | 2014 | 4300 ccm | 289 | - | - |
| Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 6A) | 2014 | 5300 ccm | 360 | - | - |
| Sierra 2500HD Work Truck 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Work Truck 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Work Truck 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Work Truck 4dr Crew Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Work Truck 2dr Regular Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD Work Truck 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 2500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Work Truck 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab 4WD LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 2dr Regular Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 2dr Regular Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 2dr Regular Cab LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 4dr Crew Cab LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD SLE 4dr Crew Cab SB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 2dr Regular Cab 4WD LB (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 3500HD Work Truck 4dr Crew Cab LB DRW (6.0L 8cyl 6A) | 2014 | 6000 ccm | 327 | - | - |
| Sierra 1500 Work Truck | 2013 | 4300 ccm | 141 | 210 | 140.0 |
| Sierra 1500 SL | 2013 | 4800 ccm | 141 | 210 | 140.0 |
| Sierra 1500 SLE | 2013 | 4800 ccm | 141 | 210 | 140.0 |
| Sierra 1500 SLT | 2013 | 5300 ccm | 141 | 210 | 140.0 |
| Sierra 1500 Xtra Fuel Economy | 2013 | 5300 ccm | 141 | 210 | 140.0 |
| Sierra 1500 Denali | 2013 | 6200 ccm | 141 | 210 | 140.0 |
| Sierra 1500 Hybrid 3HA | 2013 | 6000 ccm | 141 | 210 | 140.0 |
| Sierra 1500 Hybrid 3HB | 2013 | 6000 ccm | 141 | 210 | 140.0 |
| Sierra 2500HD Work Truck | 2013 | 4800 ccm | 141 | 210 | 140.0 |
| Sierra 2500HD SLE | 2013 | 4800 ccm | 141 | 210 | 140.0 |
| Sierra 2500HD SLT | 2013 | 5300 ccm | 331 | - | - |
| Sierra 2500HD Denali | 2013 | 6000 ccm | 365 | - | - |
| Sierra 3500HD SRW Work truck | 2013 | 4300 ccm | 198 | - | - |
| Sierra 3500HD SRW SLE | 2013 | 4800 ccm | 306 | - | - |
| Sierra 3500HD SRW SLT | 2013 | 5300 ccm | 331 | - | - |
| Sierra 3500HD DRW Work Truck | 2013 | 4800 ccm | 306 | - | - |
| Sierra 3500HD DRW SLE | 2013 | 4800 ccm | 306 | - | - |
| Sierra 3500HD DRW SLT | 2013 | 5300 ccm | 331 | - | - |
| Sierra 3500HD Denali | 2013 | 6000 ccm | 365 | - | - |
| Sierra 3500HD Chassis Work truck | 2013 | 4300 ccm | 198 | - | - |
| Sierra 3500HD Chassis SLE | 2013 | 4800 ccm | 306 | - | - |
| Sierra 1500 Work Truck | 2012 | 4800 ccm | 310 | - | - |
| Sierra 1500 SLE | 2012 | 4800 ccm | 310 | - | - |
| Sierra 1500 SL | 2012 | 4800 ccm | 310 | - | - |
| Sierra 1500 SLT | 2012 | 5300 ccm | 324 | - | - |
| Sierra 1500 XFE | 2012 | 5300 ccm | 324 | - | - |
| Sierra 1500 Denali | 2012 | 6200 ccm | 415 | - | - |
| Sierra 2500 HD | 2012 | 6000 ccm | 374 | - | - |
| Sierra 2500 HD Crew Cab | 2012 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Extended Cab | 2012 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Regular Cab | 2012 | 5999 ccm | 363 | - | - |
| Sierra 3500 HD | 2012 | 6000 ccm | 363 | - | - |
| Sierra 3500 HD Crew Cab SLT | 2012 | 5999 ccm | 320 | - | - |
| Sierra 2500 HD | 2011 | 6000 ccm | 374 | - | - |
| Sierra 2500 HD Crew Cab | 2011 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Extended Cab | 2011 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Regular Cab | 2011 | 5999 ccm | 363 | - | - |
| Sierra 3500 HD | 2011 | 6000 ccm | 363 | - | - |
| Sierra 3500 HD Crew Cab SLT | 2011 | 5999 ccm | 320 | - | - |
| Sierra 1500 Denali | 2011 | 6200 ccm | 415 | - | - |
| Sierra 1500 SL | 2011 | 4800 ccm | 310 | - | - |
| Sierra 1500 SLE | 2011 | 4800 ccm | 310 | - | - |
| Sierra 1500 SLT | 2011 | 5300 ccm | 324 | - | - |
| Sierra 1500 Work Truck | 2011 | 4800 ccm | 310 | - | - |
| Sierra 1500 XFE | 2011 | 5300 ccm | 324 | - | - |
| Sierra 1500 Work Truck | 2010 | 4800 ccm | 310 | - | - |
| Sierra 1500 SLE | 2010 | 4800 ccm | 310 | - | - |
| Sierra 1500 SL | 2010 | 4800 ccm | 310 | - | - |
| Sierra 1500 SLT | 2010 | 5300 ccm | 324 | - | - |
| Sierra 1500 XFE | 2010 | 5300 ccm | 324 | - | - |
| Sierra 1500 Denali | 2010 | 6200 ccm | 415 | - | - |
| Sierra 2500 HD | 2010 | 6000 ccm | 374 | - | - |
| Sierra 2500 HD Crew Cab | 2010 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Extended Cab | 2010 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Regular Cab | 2010 | 5999 ccm | 363 | - | - |
| Sierra 3500 HD | 2010 | 6000 ccm | 363 | - | - |
| Sierra 3500 HD Crew Cab SLT | 2010 | 5999 ccm | 320 | - | - |
| Sierra Hybrid | 2009 | 5967 ccm | 325 | - | - |
| Sierra Denali Crew Cab Short | 2009 | 6199 ccm | 400 | - | - |
| Sierra 1500 Crew Cab | 2009 | 4300 ccm | 191 | - | - |
| Sierra 3500HD Crew Cab SLT | 2009 | 5999 ccm | 310 | - | - |
| Sierra 3500 HD Crew Cab SLT | 2009 | 5999 ccm | 320 | - | - |
| Sierra 2500 HD | 2009 | 6000 ccm | 374 | - | - |
| Sierra 2500 HD Crew Cab | 2009 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Extended Cab | 2009 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Regular Cab | 2009 | 5999 ccm | 363 | - | - |
| Sierra 3500 HD | 2009 | 6000 ccm | 363 | - | - |
| Sierra 3500 HD | 2008 | 6000 ccm | 351 | - | - |
| Sierra 2500 HD | 2008 | 6000 ccm | 362 | - | - |
| Sierra 2500HD Regular Cab | 2008 | 5999 ccm | 351 | - | - |
| Sierra 1500 Crew Cab | 2008 | 4800 ccm | 293 | - | - |
| Sierra 1500 | 2008 | 4298 ccm | 194 | - | - |
| Sierra 2500 HD Crew Cab | 2008 | 5999 ccm | 351 | - | - |
| Sierra 2500HD Extended Cab | 2008 | 5999 ccm | 351 | - | - |
| Sierra 1500 Extended Cab | 2008 | 5300 ccm | 313 | - | - |
| Sierra Denali Crew Cab | 2008 | 6199 ccm | 400 | - | - |
| Sierra 3500 HD Crew Cab Work Truck | 2008 | 5999 ccm | 352 | - | - |
| Sierra 2500 HD Regular Cab | 2008 | 5999 ccm | 363 | - | - |
| Sierra 2500 HD Extended Cab | 2008 | 5999 ccm | 363 | - | - |
| Sierra | 2007 | 4294 ccm | 523 | - | - |
| Sierra | 2007 | 4294 ccm | 201 | - | - |
| Sierra Classic Denali Crew Cab 4WD | 2007 | 5998 ccm | 343 | - | - |
| Sierra 2500HD Regular Cab | 2007 | 5997 ccm | 351 | - | - |
| Sierra Classic 3500 Extended Cab | 2007 | 5999 ccm | 298 | - | - |
| Sierra Denali Crew Cab AWD | 2007 | 6172 ccm | 400 | - | - |
| Sierra 1500 Extended Cab | 2007 | 5357 ccm | 313 | - | - |
| Sierra 1500 Regular Cab | 2007 | 4802 ccm | 293 | - | - |
| Sierra 2500HD Crew Cab | 2007 | 5997 ccm | 351 | - | - |
| Sierra Classic 3500 Crew Cab | 2007 | 5999 ccm | 298 | - | - |
| Sierra 3500HD Crew Cab | 2007 | 5999 ccm | 310 | - | - |
| Sierra 2500HD Extended Cab | 2007 | 5999 ccm | 351 | - | - |
| Sierra 3500HD Extended Cab | 2007 | 5999 ccm | 310 | - | - |
| Sierra 3500HD Regular Cab 4WD | 2007 | 5999 ccm | 310 | - | - |
| Sierra 1500 Crew Cab | 2007 | 4802 ccm | 293 | - | - |
| Sierra | 2006 | 4294 ccm | 194 | - | - |
| Sierra | 2006 | 4294 ccm | 201 | - | - |
| Sierra 3500 Crew Cab 4WD | 2006 | 5965 ccm | 298 | - | - |
| Sierra 1500 Hybrid Extended Cab | 2006 | 5358 ccm | 293 | - | - |
| Sierra 1500 Regular Cab | 2006 | 4293 ccm | 194 | - | - |
| Sierra Crew Cab Denali Short 4WD | 2006 | 5996 ccm | 343 | - | - |
| Sierra 1500 Crew Cab | 2006 | 4802 ccm | 283 | - | - |
| Sierra 3500 Regular Cab | 2006 | 5965 ccm | 298 | - | - |
| Sierra 1500 Extended Cab 4WD | 2006 | 5326 ccm | 293 | - | - |
| Sierra 3500 Crew Cab | 2006 | 5965 ccm | 298 | - | - |
| Sierra 2500 HD Crew Cab 4WD | 2006 | 5965 ccm | 298 | - | - |
| Sierra 2500 HD Crew Cab | 2006 | 5965 ccm | 299 | - | - |
| Sierra Hybrid 1500 Extended Cab SLE | 2005 | 5359 ccm | 293 | - | - |
| Sierra C3 | 2005 | 5965 ccm | 319 | - | - |
| Sierra 1500 Crew Cab SLE | 2005 | 5358 ccm | 293 | - | - |
| Sierra 1500 Cab | 2005 | 4802 ccm | 283 | - | - |
| Sierra 3500 Extended Cab SLE | 2005 | 5965 ccm | 298 | - | - |
| Sierra 1500 Regular Cab 4WD SLE | 2005 | 4802 ccm | 283 | - | - |
| Sierra 1500 HD Crew Cab SLE Short | 2005 | 5965 ccm | 298 | - | - |
| Sierra 3500 Crew Cab SLE | 2005 | 5965 ccm | 365 | 266 | - |
| Sierra 3500 Regular Cab 4WD SLE | 2005 | 5965 ccm | 299 | - | - |
| Sierra 2500 HD Crew Cab | 2005 | 5965 ccm | 298 | - | - |
| Sierra 2500 HD Extended Cab SLE | 2005 | 5965 ccm | 298 | - | - |
| Sierra 1500 Extended Cab 4WD SLE | 2005 | 5359 ccm | 293 | - | - |
| Sierra Crew Cab Denaly | 2005 | 5964 ccm | 338 | - | - |
| Sierra Denali Extended Cab 4WD | 2004 | 5963 ccm | 323 | - | - |
| Sierra C3 | 2004 | 5967 ccm | 319 | - | - |
| Sierra 2500 Regular Cab SLE | 2004 | 5965 ccm | 298 | - | - |
| Sierra Crew-Cab Denaly | 2004 | 5965 ccm | 338 | - | - |
| Sierra 2500 HD Crew Cab 4WD Work Truck | 2004 | 5965 ccm | 298 | - | - |
| Sierra 2500 4WD Extended Cab SLT | 2004 | 5965 ccm | 298 | - | - |
| Sierra 1500 Crew Cab 4WD SLE | 2004 | 5359 ccm | 293 | - | - |
| Sierra 2500 HD Regular Cab SLE Long | 2004 | 5964 ccm | 298 | - | - |
| Sierra | 2003 | 4816 ccm | 273 | - | - |
| Sierra | 2003 | 4816 ccm | 283 | - | - |
| Sierra C3 | 2003 | 5967 ccm | 319 | - | - |
| Sierra C3 | 2002 | 5967 ccm | 319 | - | - |
| Sierra C3 | 2001 | 5967 ccm | 355 | - | - |
| Sierra Classic 2500 | 2001 | 4293 ccm | 196 | - | - |
| Sierra Classic 2500 | 2000 | 4293 ccm | 196 | - | - |
| Sierra 5.3 Classic 2500 | 1999 | 5325 ccm | 280 | - | - |
| Sierra Classic 2500 | 1999 | 4293 ccm | 196 | - | - |
| Sierra 4.8 Classic 2500 | 1999 | 4784 ccm | 265 | - | - |
| Sierra | 1977 | 4784 ccm | - | - | - |
| Sierra | 1977 | 4784 ccm | - | - | - |
