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 Things Under the Hood
    WARNING: An electric fan under the hood can start up and injure you even when the engine is not running. Keep hands, clothing, and tools away from any underhood electric fan. WARNING: Things t ...

    To Use the Engine Heater
    1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. The electrical cord is located on the passenger side of the engine compartment, near the air cleaner. 3. Plug it into a n ...

    Sending a Stored Name Tag During a Call
    1. Press . The system responds with “Ready” followed by a tone. 2. Say “Send name tag.” The system responds with “Say a name tag to send tones” followed by a tone. 3. Say the name ...