See also:

OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview&nb ...

Add-On Electrical Equipment
Notice: Do not add anything electrical to the vehicle unless you check with your dealer/retailer first. Some electrical equipment can damage the vehicle and the damage would not be covered by th ...

Taillamps and Turn Signal Lamps
To replace a taillamp or turn signal bulb, do the following: 1. Open the liftgate. 2. Remove the two screws from the taillamp assembly. 3. Pull the taillamp assembly away from the vehicle ...