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:

    RELEASE PARK BRAKE SWITCH
    For vehicles with the electric parking brake, this message displays if the switch is pulled while the vehicle is moving. See the electric parking brake information under Parking Brake (Elect ...

    Timer
    Can be used to measure time. For example, timing how long it takes to travel from one point to another. To access the timer, press the trip/fuel button until Timer 00:00:00 displays. To turn ...

    Driving Characteristics and Towing Tips
    WARNING The driver can lose control when pulling a trailer if the correct equipment is not used or the vehicle is not driven properly. For example, if the trailer is too heavy, the brakes may not ...