GMC
Sierra Mud Terrain Tires 4WD (Sport Mode)
U.S. fuel economy and specifications from the EPA.
16Best combined MPG2026 model year
2026Model years1 with EPA ratings
1Rated configurationDrive, transmission and engine
5.3 LEngine sizeDisplacement
1 configuration.
4-Wheel Drive · Automatic 10-spd
Regular gasoline · Standard Pickup Trucks 4WD
- Combined MPG
- 16
- Engine displacement
- 5.3 L
- Cylinders
- 8