Service and Maintenance

See also:

Manual Seats
To adjust the seat: 1. Lift the bar to unlock the seat. 2. Slide the seat to the desired position and release the bar. 3. Try to move the seat back and forth to be sure the seat is locked in pl ...

The Elephant
GMC has long combined ruggedness and elegance to good effect — consider the Sierra pickup and Acadia crossover, for example. But the Terrain is one odd duck. GM says it shares just a few body pa ...

Rear Window Lockout
The rear window lockout feature prevents the rear passenger windows from operating, except from the driver position. Press to activate the rear window lockout switch. The LED light comes on when a ...