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:

    Wiper Activated Headlamps
    This feature activates the headlamps and parking lamps after the windshield wipers have been in use for about six seconds. For this feature to work, the exterior lamp control must be in AUTO. ...

    Exterior
    Styling of the DTS is "more architectural and linear," said Gary Cowger, former president of General Motors North America, during its initial appearance. The new model's styling evokes C ...

    Adjustable Throttle and Brake Pedal
    The vehicle has adjustable throttle and brake pedals that allow you to change their positions. The feature will not operate when the vehicle is in R (Reverse) or while using the cruise control. ...