GMC Terrain: Onstar.com
The website provides access to account information, manages the OnStar subscription, and allows viewing of videos of each service. Get subscription plan pricing and sign up for OnStar Vehicle Diagnostics. Click on the “My Account” tab on the home page.
TTY Users
OnStar has the ability to communicate to the deaf, hard&-ofhearing, or speech&-impaired customers while in the vehicle. The available dealer&-installed TTY system can provide in-vehicl ...OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. T ...See also:
Parking Brake
To apply the parking brake, push the
pedal down with your foot. To
release it, push on the pedal again.
The parking brake indicator on the
instrument panel should go out when
the parking ...
Fan speed control dial
Fan speed control dial
The fan operates only with the ignition
switch in the ON position. The fan speed
control dial is used to select the AUTO
(automatic control) mode or to select the
des ...
Replacing fog lamp bulbs (if equipped)
1. Make sure the fog lamp switch is
in the off position.
2. From underneath the vehicle,
carefully disconnect the electrical
connector from the bulb.
3. Remove the bulb from the lamp
assembly by ...