GMC Terrain: Bulb Replacement / Front Turn Signal Lamps
To replace one of these bulbs:
- Open the hood. See Hood.

- Remove the bulb access cap
from the top of the headlamp
assembly by turning it
counterclockwise.

- Remove the bulb from the bulb
socket by pinching the tabs on
either side of the bulb and pull
straight out.
- Install the new bulb in the bulb
socket.
- Install the bulb access cap onto
the headlamp assembly by
turning clockwise.
To replace one of these lamps:
Open the liftgate. See Liftgate.
Remove the two screw caps
and two screws from the
taillamp assembly.
Pull the taillamp assembly out
of the vehicle body...
Other information:
GMC encourages customers to call
the toll-free number for assistance.
However, if a customer wishes to
write or e-mail GMC, the letter
should be addressed to:
United States and Puerto Rico
GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
www...
The cruise control light is white
when the cruise control is on and
ready, and turns green when the
cruise control is set and active.
See Cruise Control.
Adaptive Cruise Control Light
This light is white when the Adaptive
Cruise Control (ACC, if equipped) is
on and ready, and turns green when
the ACC is set and active...