See also:

Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps
To replace one of these bulbs: 1. Open the tailgate. See Tailgate on page 2‑10 for more information. 2. Remove the two rear lamp assembly screws near the tailgate latch strikerpost and pull ...

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 communicat ...

Security Light
The security light should come on briefly as the engine is started. If the system is working normally, the indicator light turns off. If it does not come on, have the vehicle serviced by your dealer ...