Service Bulletins

Service Bulletins give additional technical service information needed to knowledgeably service General Motors cars and trucks.

Each bulletin contains instructions to assist in the diagnosis and service of the vehicle.

    See also:

    Ignition Transmission Lock Check
    While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. The ignition should turn to LOCK/OFF only when the shift lever is in P (Park). ...

    Entry Lighting
    The headlamps, parking lamps, taillamps, and most of the interior lamps turn on briefly when is pressed on the Remote Keyless Entry (RKE) transmitter. After about 30 seconds the exterior lamps ...

    Cellular Phone Usage
    Cellular phone usage may cause interference with the vehicle's radio. This interference may occur when making or receiving phone calls, charging the phone's battery, or simply having the phon ...