One problem related to front seat heater/cooler has been reported for the 2011 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 GMC Terrain based on all problems reported for the 2011 Terrain.
Car rattles on start up and seems to be noisier than it should be. Drivers seat heater utilizes high heat no matter what settings it is on. If heater is left on I get a burning smell. Poor fuel economy, at best I get 22 mph. Engine runs rough in eco mode especially at an idle. I have had an occasional issue with hard downshifts when I decelerate then accelerate. I do mostly city driving.
| Seats problems | |
| Front Seat Heater/cooler problems |