2008 GMC Sierra
US · Pickup · Standard Pickup Trucks 2WD
The 2008 GMC Sierra is listed in the US market as a pickup. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.
- Engine
- Varies by configuration: 4.3L 6-cylinder, 4.8L 8-cylinder, 5.3L 8-cylinder, 5.3L 8-cylinder (390-540), 6.0L 8-cylinder, 6.2L 8-cylinder
- Transmission
- Automatic
- Drivetrain
- Varies by configuration: RWD, AWD
- Fuel
- Varies by configuration: Gasoline, Flex fuel
- Economy
- 14 mpg (16.8 L/100 km) to 17 mpg (13.8 L/100 km) combined
Key Figures
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | Varies by configuration: 4.3L 6-cylinder, 4.8L 8-cylinder, 5.3L 8-cylinder, 5.3L 8-cylinder (390-540), 6.0L 8-cylinder, 6.2L 8-cylinder | |
| Displacement | 4.3 L to 6.2 L | |
| Cylinders | 6 to 8 | |
| Fuel type | Varies by configuration: Gasoline, Flex fuel | EPA fueleconomy.gov |
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 4 to 6 | |
| Drivetrain | Varies by configuration: RWD, AWD |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 14 mpg (16.8 L/100 km) to 17 mpg (13.8 L/100 km) | EPA fueleconomy.gov |
| City | 12 mpg (19.6 L/100 km) to 15 mpg (15.7 L/100 km) | |
| Highway | 17 mpg (13.8 L/100 km) to 20 mpg (11.8 L/100 km) |
Our sources do not publish these for this vehicle: Aspiration, Power, Torque, Electric range, Battery capacity. We leave them out instead of estimating.
Trims and configurations
12 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.
- Sierra C15 2WD · 4.3L · RWD · 4-speed automatic
- Sierra C15 2WD · 4.8L · RWD · 4-speed automatic
- Sierra C15 2WD · 5.3L · RWD · 4-speed automatic
- Sierra C15 2WD · 5.3L · RWD · 4-speed automatic · FFV
- Sierra C15 2WD · 6.0L · RWD · 4-speed automatic
- Sierra C15 2WD · 6.2L · RWD · 6-speed automatic
- Sierra K15 4WD · 4.3L · AWD · 4-speed automatic
- Sierra K15 4WD · 4.8L · AWD · 4-speed automatic
- Sierra K15 4WD · 5.3L · AWD · 4-speed automatic
- Sierra K15 4WD · 5.3L · AWD · 4-speed automatic · FFV
- Sierra K15 4WD · 6.0L · AWD · 4-speed automatic
- Sierra K15 AWD · 6.2L · AWD · 6-speed automatic
Recalls
NHTSA lists 2 recall campaigns for this model year. Last checked November 9, 2026.
10V240000: ELECTRICAL SYSTEM
GM IS RECALLING CERTAIN MODEL YEAR 2006-2009 BUICK, LUCERNE; CADILLAC DTS; HUMMER H2; MODEL YEAR 2008-2009 BUICK ENCLAVE; CADILLAC CTS; MODEL YEAR 2007-2009 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT; CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE; GMC ACADIA, SIERRA, YUKON, YUKON XL; SATURN OUTLOOK; AND MODEL YEAR 2009 CHEVROLET TRAVERSE VEHICLES EQUIPPED WITH A HEATED WASHER FLUID SYSTEM…
Remedy: DEALERS WILL PERMANENTLY DISABLE AND REMOVE THE HEATED WASHER FLUID MODULE. AN UPDATED PAGE FOR THE OWNER MANUAL WILL BE PROVIDED AND INSERTED IN THE OWNER MANUAL TO DOCUMENT THAT THE FEATURE HAS BEEN PERMANENTLY DISABLED AND REMOVED…
Reported June 4, 2010. View on NHTSA
08V441000: ELECTRICAL SYSTEM
GM IS RECALLING 857,735 MY 2006-2008 BUICK LUCERNE; CADILLAC DTS; HUMMER H2; MY 2007-2008 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT; CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE; GMC ACADIA, SIERRA, YUKON, YUKON XL, SATURN OUTLOOK; AND MY 2008 BUICK ENCLAVE VEHICLES EQUIPPED WITH A HEATED WIPER WASHER FLUID SYSTEM. A SHORT CIRCUIT ON THE PRINTED CIRCUIT BOARD FOR THE WASHER FLUID HEATER…
Remedy: DEALERS WILL INSTALL A WIRE HARNESS WITH AN IN-LINE FUSE FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 12, 2008. OWNERS MAY CONTACT BUICK AT 1-866-608-8080; CADILLAC AT 1-800-982-2339 OR HTTP://WWW.CADILLAC.COM; CHEVROLET AT…
Reported August 28, 2008. View on NHTSA
Data sources
- EPA fueleconomy.gov · retrieved November 8, 2026 · US Government public data
- NHTSA vPIC · retrieved October 16, 2026 · US Government public data
Source checked: November 8, 2026
Data verified: November 8, 2026
Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.
Compare
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Frequently asked questions
What engine does the 2008 GMC Sierra have?
Varies by configuration: 4.3L 6-cylinder, 4.8L 8-cylinder, 5.3L 8-cylinder, 5.3L 8-cylinder (390-540), 6.0L 8-cylinder, 6.2L 8-cylinder. Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 2008 GMC Sierra?
Combined fuel economy is 14 mpg (16.8 L/100 km) to 17 mpg (13.8 L/100 km), as published by the source shown in the specification table.
Is the 2008 GMC Sierra front-wheel, rear-wheel or all-wheel drive?
Drivetrain: Varies by configuration: RWD, AWD.
Are there recalls for the 2008 GMC Sierra?
NHTSA lists 2 recall campaigns for this model year (last checked November 9, 2026). Details are in the Recalls section.