Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech impaired and who use Text Telephones (TTYs), GMC has TTY equipment available at its Customer Assistance Center. Any TTY user can communicate with GMC by dialing:
1-800-462-8583. TTY users in Canada can dial 1-800-263-3830.
See also:
Vehicle Overview
GMC's Terrain is the twin to the Chevrolet Equinox. The five-seat crossover
comes in front- or all-wheel drive with a four-cylinder or V-6 engine.
Competitors include the Ford Escape, Toyota RAV4 ...
New Vehicle Break-In
Notice: The vehicle does not need an elaborate break-in. But it will perform
better in the long run if you follow these guidelines:
○ Do not drive at any one constant speed, fast or slow, for ...
Automatic Dimming Rearview Mirror
The vehicle may have an automatic dimming inside rearview mirror. Automatic dimming
reduces the glare from the headlamps of the vehicle behind you. The dimming feature
comes on and the indicator l ...





