RATTLING/CLICKING NOISE IN FLYWHEEL AREA (ENGINE RUNNING)

Subject: RATTLING/CLICKING NOISE IN FLYWHEEL AREA WHILE ENGINE IS RUNNING (TRIM/INSTALL COVER)

Models Affected: 1991 FIREBIRD WITH 5.0L

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: The updated torque converter cover already has a 71mm (2.80 in.) opening.

Labor Operation Number: T1657 Labor Time : .4 Hours

***************************************************************************** *STG DISCLAIMER*

"THE TEMPLATE DISPLAYED IN THIS SERVICE PUBLICATION IS NOT INTENDED FOR USE" (Please refer to the actual publication for an accurate "TEMPLATE" to use in this service procedure.) *****************************************************************************

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.