GMC
Sierra C15 Cab Chassis 2WD
U.S. fuel economy and specifications from the EPA.
18Best combined MPG2015 model year
2015–2018Model years4 with EPA ratings
6Rated configurationsDrive, transmission and engine
4.3–5.3 LEngine sizeDisplacement
Best combined MPG by model year
The highest EPA rating among each year's configurations.
2015 18 MPG
2016 17 MPG
2017 17 MPG
2018 17 MPG
1 configuration.
Rear-Wheel Drive · Automatic 6-spd
Regular gasoline · Special Purpose Vehicle 2WD
- Combined MPG
- 17
- Engine displacement
- 5.3 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 6-spd
Regular gasoline · Special Purpose Vehicle 2WD
- Combined MPG
- 17
- Engine displacement
- 5.3 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 6-spd
Regular gasoline · Special Purpose Vehicle 2WD
- Combined MPG
- 17
- Engine displacement
- 5.3 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 6-spd
Regular gasoline or E85 · Special Purpose Vehicle 2WD
- Combined MPG on regular gasoline
- 17
- Combined MPG on E85
- 12
- Engine displacement
- 5.3 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 6-spd
Regular gasoline · Special Purpose Vehicle 2WD
- Combined MPG
- 17
- Engine displacement
- 5.3 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 6-spd
Regular gasoline or E85 · Special Purpose Vehicle 2WD
- Combined MPG on regular gasoline
- 18
- Combined MPG on E85
- 12
- Engine displacement
- 4.3 L
- Cylinders
- 6