GMC
R1500 Suburban 2WD
U.S. fuel economy and specifications from the EPA.
17Best combined MPG1989 model year
1989–1991Model years3 with EPA ratings
6Rated configurationsDrive, transmission and engine
5.7–6.2 LEngine sizeDisplacement
Best combined MPG by model year
The highest EPA rating among each year's configurations.
1989 17 MPG
1990 17 MPG
1991 17 MPG
2 configurations.
Rear-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicles
- Combined MPG
- 13
- Engine displacement
- 5.7 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicles
- Combined MPG
- 17
- Engine displacement
- 6.2 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicle 2WD
- Combined MPG
- 14
- Engine displacement
- 5.7 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicle 2WD
- Combined MPG
- 17
- Engine displacement
- 6.2 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 4-spd
Regular gasoline · Special Purpose Vehicle 2WD
- Combined MPG
- 14
- Engine displacement
- 5.7 L
- Cylinders
- 8
Rear-Wheel Drive · Automatic 4-spd
Diesel · Special Purpose Vehicle 2WD
- Combined MPG
- 17
- Engine displacement
- 6.2 L
- Cylinders
- 8