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:

    When to Check Lubricant
    It is not necessary to regularly check rear axle fluid unless there is a leak suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired. All ax ...

    Recreational Vehicle Towing
    If the vehicle is a hybrid, see the hybrid supplement for more information. Recreational vehicle towing means towing the vehicle behind another vehicle – such as behind a motorhome. The two most co ...

    Electrical System Overload
    The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting th ...