See also:

Trailer Wiring Harness
The vehicle is equipped with one of the following wiring harnesses for towing a trailer or hauling a slide-in camper. ...

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. To ch ...

Sensors
The solar sensor, located on top of the instrument panel near the windshield, monitors the solar heat. The climate control system uses the information to adjust the temperature, fan speed, recircu ...