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:

    Checking Coolant
    The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not d ...

    Every Engine Oil Change
    ► Change engine oil and filter. Reset oil life system. See Engine Oil  and Engine Oil Life System . An Emission Control Service. ► Engine coolant level check. See Engine Coolant . ...

    Trailer Towing
    Before pulling a trailer, there are three important considerations that have to do with weight: The weight of the trailer. The weight of the trailer tongue. The total weight on your vehicle& ...