2021 GMC Sierra 1500 Gas Tank Size
Gas tank size for 2021 GMC Sierra 1500. Fuel tank capacity in gallons and litres.
This page may contain affiliate links marked with. Read more about our disclaimer.
| Trim | Engine Type | Gallons (US) | Gallons (UK) | Litres |
|---|---|---|---|---|
| SLE 4dr Crew Cab 4WD 5.8 ft. SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| SLE 4dr Crew Cab 4WD 6.6 ft. SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| 4dr Double Cab SB(4.3L V6 6-speed Automatic) | flex-fuel (FFV) | 24 | 20 | 91 |
| Elevation 4dr Double Cab 4WD SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| Elevation 4dr Double Cab SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| SLT 4dr Crew Cab 4WD 5.8 ft. SB(5.3L V8 10-speed Automatic) | Gas | 24 | 20 | 91 |
| SLT 4dr Crew Cab 5.8 ft. SB(5.3L V8 8-speed Automatic) | Gas | 24 | 20 | 91 |
| SLT 4dr Crew Cab 4WD 6.6 ft. SB(5.3L V8 10-speed Automatic) | Gas | 24 | 20 | 91 |
| AT4 4dr Crew Cab 4WD 5.8 ft. SB(5.3L V8 10-speed Automatic) | Gas | 24 | 20 | 91 |
| Denali 4dr Crew Cab 4WD 5.8 ft. SB(5.3L V8 10-speed Automatic) | Gas | 24 | 20 | 91 |
| AT4 4dr Crew Cab 4WD 6.6 ft. SB(3.0L V6 Turbodiesel 10-speed Automatic) | Diesel | 24 | 20 | 91 |
| 4dr Double Cab 4WD SB(4.3L V6 6-speed Automatic) | flex-fuel (FFV) | 24 | 20 | 91 |
| 4dr Crew Cab 4WD 6.6 ft. SB(4.3L V6 6-speed Automatic) | flex-fuel (FFV) | 24 | 20 | 91 |
| 4dr Crew Cab 4WD 5.8 ft. SB(4.3L V6 6-speed Automatic) | flex-fuel (FFV) | 24 | 20 | 91 |
| SLE 4dr Double Cab SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| 2dr Regular Cab LB(4.3L V6 6-speed Automatic) | flex-fuel (FFV) | 28 | 23.3 | 106 |
| SLE 4dr Double Cab 4WD SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| 2dr Regular Cab 4WD LB(4.3L V6 6-speed Automatic) | flex-fuel (FFV) | 28 | 23.3 | 106 |
| SLE 4dr Crew Cab 5.8 ft. SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| 4dr Crew Cab 5.8 ft. SB(4.3L V6 6-speed Automatic) | flex-fuel (FFV) | 24 | 20 | 91 |
| Elevation 4dr Crew Cab 5.8 ft. SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| Denali 4dr Crew Cab 4WD 6.6 ft. SB(5.3L V8 10-speed Automatic) | Gas | 24 | 20 | 91 |
| Denali 4dr Crew Cab 5.8 ft. SB(5.3L V8 8-speed Automatic) | Gas | 24 | 20 | 91 |
| Elevation 4dr Crew Cab 4WD 5.8 ft. SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| Elevation 4dr Crew Cab 4WD 6.6 ft. SB(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| Elevation 4dr Crew Cab 4WD 5.8 ft. SB w/3VL(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |
| Elevation 4dr Double Cab 4WD SB w/3VL(2.7L 4cyl Turbo 8-speed Automatic) | Gas | 24 | 20 | 91 |