Skip to main content

Find and Compare Cars

2003 GMC Sierra 1500 4WD
Personalize
Find a car
Flex-Fuel Vehicle

8 cyl, 5.3 L,
Automatic 4-spd
Compare
Fuel Economy
EPA MPG
Regular Gas
Combined MPG:14
combined
city/highway
MPG
City MPG:12
city
Highway MPG:16
highway
7.1 gals/100 miles
E85
Combined MPG:10
combined
city/highway
MPG
City MPG:9
city
Highway MPG:12
highway
10.0 gal/100mi
Unofficial MPG Estimates Shared by Vehicle Owners Owner MPG Estimates are not yet available for this vehicle.
How can I share my MPG?
Vehicle Specification Data
EPA Size Class More about EPA size class Standard Pickup Trucks 4WD
Drive 4-Wheel or All-Wheel Drive
Gas Guzzler no
Supercharger no
Turbocharger no
Passenger Volume Not Available
Luggage Volume Not Available
Engine Descriptor More about Engine Descriptors FLEX-FUEL
Transmission DescriptorMore about Transmission Descriptors CLKUP
More about this vehicle

This website is administered by Oak Ridge National Laboratory for the U.S. DOE and the U.S. EPA.