OnStar

See also:

Four-Wheel-Drive Vehicles
Use the following procedure to dolly tow a four-wheel-drive vehicle from the rear: 1. Attach the dolly to the tow vehicle following the dolly manufacturer's instructions. 2. Drive the rear wheels on ...

Pick-Up Box Identification and Fender Marker Lamps
The pick-up box identification lamps are LEDs. For replacement of the LED lighting assembly contact your dealer. To replace a pickup box fender marker lamp bulb: 1. Press the tab from the back to re ...

Starting the Engine
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. If the vehicle is a hybrid, see the hybrid supplement for more information. Notice: Do not try to shift to ...