1999 GMC Sierra 2500
The 1999 GMC Sierra 2500 has 42 complaints on file with NHTSA. The largest share (55%) concerns brakes. Next are suspension (7%) and tires (7%).
At a glance
- Complaints
- 42 filed with NHTSA
- Most reported
- Brakes 55% of complaints
- Fuel economy
- 12 to 15 MPG combined
Sources: NHTSA complaints, recalls and 5-Star ratings; U.S. EPA
Problems owners report
The 1999 GMC Sierra 2500 has 42 complaints on file with NHTSA. The largest share (55%) concerns brakes. Next are suspension (7%) and tires (7%).
Mileage, severity and owner comments for the 1999 GMC Sierra 2500
Fuel economy
The EPA lists 2 versions of the 1999 GMC Sierra 2500. Combined fuel economy ranges from 12 to 15 MPG; the most efficient version is rated 14 city / 18 highway.