What gas does the 2008 GMC Sierra 1500 take?
It depends on the engine: regular gasoline for the 4.3L 6-cylinder, 4.8L 8-cylinder, 5.3L 8-cylinder and 6.0L 8-cylinder; premium gasoline for the 6.2L 8-cylinder. The 5.3L 8-cylinder is flex-fuel and can also run on E85.
Key takeaways
- 12 EPA-certified configurations listed for the 2008 GMC Sierra 1500.
- Rated on premium: if the owner's manual says premium required, use premium; if it says recommended, regular works with some loss of power and economy.
- Only the engines marked flex-fuel can use E85.
| Engine | Transmission | Drive | Rated fuel | E85 |
|---|---|---|---|---|
| 4.3L 6-cylinder | 4-speed automatic | 4-Wheel or AWD | regular gasoline | No |
| 4.3L 6-cylinder | 4-speed automatic | RWD | regular gasoline | No |
| 4.8L 8-cylinder | 4-speed automatic | 4-Wheel or AWD | regular gasoline | No |
| 4.8L 8-cylinder | 4-speed automatic | RWD | regular gasoline | No |
| 5.3L 8-cylinder | 4-speed automatic | 4-Wheel or AWD | regular gasoline | No |
| 5.3L 8-cylinder | 4-speed automatic | 4-Wheel or AWD | regular gasoline | Yes (flex-fuel) |
| 5.3L 8-cylinder | 4-speed automatic | RWD | regular gasoline | No |
| 5.3L 8-cylinder | 4-speed automatic | RWD | regular gasoline | Yes (flex-fuel) |
| 6.0L 8-cylinder | 4-speed automatic | 4-Wheel or AWD | regular gasoline | No |
| 6.0L 8-cylinder | 4-speed automatic | RWD | regular gasoline | No |
| 6.2L 8-cylinder | 6-speed automatic | 4-Wheel or AWD | premium gasoline | No |
| 6.2L 8-cylinder | 6-speed automatic | RWD | premium gasoline | No |
Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov). Each row is one certified configuration; a trim or option not sold in a configuration is not listed.
Useful for the 2008 GMC Sierra 1500
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