RATTLING/CLICKING NOISE IN FLYWHEEL AREA (ENGINE RUNNING)

CONDITION:

CUSTOMERS OF THE ABOVE VEHICLES MAY NOTICE A RATTLING OR CLICKING NOISE COMING FROM THE FLYWHEEL AREA WHILE THE ENGINE IS RUNNING. THIS NOISE MAY BE MORE APPARENT WHEN THE ENGINE IS COLD.

CAUSE:

THIS NOISE MAY BE CAUSED BY THE INTERFERENCE BETWEEN THE TORQUE CONVERTER COVER AND THE STARTER. THE STARTER MAY PUSH THE CONVERTER COVER TO CONTACT THE FLYWHEEL PRODUCING THE NOISE.

CORRECTION:

TO CORRECT THE ABOVE CONDITION. PERFORM THE FOLLOWING:

1. REMOVE THE TORQUE CONVERTER COVER. 2. USING UTILITY KNIFE, OR EQUIVALENT TOOL, TRIM AWAY 5 MM (.20 IN.) OF MATERIAL ON COVER AS INDICATED BY THE DASH LINE. (SEE FIGURE) 3. RE-INSTALL THE TORQUE CONVERTER COVER. 4. INSPECT FOR INTERFERENCE TO VERIFY THAT SUFFICIENT MATERIAL HAS BEEN REMOVED.

NOTE: IF THE TORQUE CONVERTER COVER ALREADY HAS THE 71MM (2.80 IN.) OPENING, IT WILL NOT BE NECESSARY TO MODIFY THE COVER.

LABOR OPERATION NUMBER: T1657 ( LABOR TIME : .4 HOURS

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.

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