2020 GMC Sierra 1500 specs
Maintenance specs from the 2020 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), 5.3L V8 (L84), 6.2L V8 (L87), 6.6L V8 (L8T)
Engine & fluids
Tires & wheels
Coolant
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 2.7L L4 Engine – 1500 Series | 12.4 qtcapacity | “2.7L L4 Engine – 1500 Series 11.8 L 12.4 qt” | PDF page 460 ↗ |
| 4.3L V6 Engine – 1500 Series | 12.2 qtcapacity | “4.3L V6 Engine – 1500 Series 11.5 L 12.2 qt” | PDF page 460 ↗ |
| 5.3L V8 Engine – 1500 Series (L82) | 13.5 qtcapacity | “5.3L V8 Engine – 1500 Series (L82) 12.8 L 13.5 qt” | PDF page 460 ↗ |
| 5.3L V8 Engine – 1500 Series (L84) | 13.8 qtcapacity | “5.3L V8 Engine – 1500 Series (L84) 13.1 L 13.8 qt” | PDF page 460 ↗ |
| 6.2L V8 Engine – 1500 Series | 13.3 qtcapacity | “6.2L V8 Engine – 1500 Series 12.6 L 13.3 qt” | PDF page 460 ↗ |
| 6.6L V8 Gas Engine – 2500 Series and 3500 Series (L8T) | 15.9 qtcapacity | “6.6L V8 Gas Engine – 2500 Series and 3500 Series (L8T) 15.1 L 15.9 qt” | PDF page 460 ↗ |
Lug nut torque
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| All versions | 140 lb ft | “Wheel Nut Torque 190 Y 140 lb ft” | PDF page 462 ↗ |
Spark plugs
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 2.7L L4 (L3B) | 0.65–0.75 mmgap | “0.65–0.75 mm (0.026–0.030 in)” | PDF page 462 ↗ |
| 4.3L V6 (LV3), 5.3L V8 (L82), 5.3L V8 (L84), 6.2L V8 (L87), 6.6L V8 (L8T) | 0.95–1.10 mmgap | “0.95–1.10 mm (0.037–0.043 in)” | PDF page 462 ↗ |
Confirm with your own manual, dipstick or door-jamb label.
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