2005 GMC Sierra 2500 HD
The EPA lists 3 versions of the 2005 GMC Sierra 2500 HD. Combined fuel economy ranges from 9 to 11 MPG; the most efficient version is rated 10 city / 12 highway.
At a glance
- Fuel economy
- 9 to 11 MPG combined
Sources: NHTSA complaints, recalls and 5-Star ratings; U.S. EPA
Fuel economy
The EPA lists 3 versions of the 2005 GMC Sierra 2500 HD. Combined fuel economy ranges from 9 to 11 MPG; the most efficient version is rated 10 city / 12 highway.