4 WAL DIAGNOSTIC INFORMATION (ATTACHED TRAINING MANUAL). GMC Truck Safari

THE PURPOSE OF THIS BULLETIN IS TO PROVIDE DIAGNOSTIC INFORMATION, FOR 4WAL, UNTIL THE SERVICE MANUAL IS AVAILABLE.

ATTACHED IS A COPY OF THE SERVICE TECHNOLOGY GROUP TRAINING MANUAL THAT CAN BE USED FOR 4WAL DIAGNOSIS.

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General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.