Vehicle and Power Issues

OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.

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    Shifting Into Park
    WARNING It can be dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. If you have left the engine running, t ...

    Shifting Out of Park (P)
    Your vehicle has an automatic transmission shift lock control system. You have to fully apply the regular brakes first and then press the shift lever button before you can shift from PARK (P) when ...

    Stoplamp,Taillamp, and Turn Signal Lamp
    Driver Side Shown, Passenger Side Similar A. Taillamp B. Turn Signal Lamp C. Stoplamp/Taillamp To replace any one of these bulbs: 1. Open the trunk. 2. Remove the push pins securing the trunk ...