ATTACHING WIRING HARNESS CONNECTOR (SERVICE PROCEDURE)

Subject: ATTACHING WIRING HARNESS CONNECTOR TO THERMOSTAT CONNECTOR ON 40MT SERIES CRANKING MODELS - 1982 AND PRIOR MEDIUM DUTY TRUCKS WITH DIESEL ENGINE

CONDITION: Difficulty in attaching the harness connector to the thermostat connector on 40MT cranking motor can result in loose connections and damaged or misaligned terminals.

SOLUTION: To properly attach connector, observe following procedure.

1. Lubricant (such as engine oil or bearing grease) may be applied to outside surface of connector body located in motor frame. DO NOT ALLOW ANY KIND OF LUBRICANT TO GET ON TERMINALS.

2. Align locator tabs on connector bodies (see illustration).

3. Push harness connector "straight on" until connector is fully seated.

4. Connector leads, as in all electrical systems, should be supported, as close as possible to connector, to avoid vibration loosening.

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.