2021 GMC Sierra 1500 specs
Maintenance specs from the 2021 GMC Sierra 1500 owner's manual. Open a spec for every version and the page it's printed on.
Engines covered: 2.7L L4 (L3B), 4.3L V6 (LV3), 5.3L V8 (L82), 6.2L V8, Duramax diesel
Engine & fluids
Tires & wheels
Capacities & towing
Lug nut torque
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| All versions | 140 lb ft | “140 lb ft” | PDF page 439 ↗ |
Spark plugs
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 2.7L L4 (L3B) | 0.026–0.030 ingap | “0.65–0.75 mm (0.026–0.030 in)” | PDF page 439 ↗ |
| 4.3L V6 (LV3) | 0.037–0.043 ingap | “4.3L V6 (LV3) H 0.95–1.10 mm (0.037–0.043 in)” | PDF page 439 ↗ |
| 5.3L V8 (L82) | 0.037–0.043 ingap | “5.3L V8 (L82) F 0.95–1.10 mm (0.037–0.043 in)” | PDF page 439 ↗ |
Confirm with your own manual, dipstick or door-jamb label.
Report a problem with this page →