A/C Compressor Clutch - Rattle

91pontiac09

Bulletin Number: 90-1-15A
Reference Number: 081202R
Publish Date: 6/91


Subject: A/C COMPRESSOR CLUTCH RATTLE BETWEEN
2600 RPM AND 2900 RPM (REPLACE
COMPRESSOR CLUTCH)

Models

Affected: 1988-1990 LEMANS MODELS


This bulletin cancels and replaces bulletin 90-1-15 issued 5/90. This bulletin is being revised to correct the compressor clutch part number.

At certain engine speeds, 2600 RPM to 2900 RPM, the A/C compressor clutch may start to rattle. This rattle occurs only with the
A/C off and stops when the compressor is turned on. The rattle noise sounds like loose heat shields on the exhaust system.

To correct this condition, first check that all compressor mounts and brackets are torqued correctly. If the noise is still there, replace the compressor clutch, part number 6552807. Follow procedures in the Pontiac Service Manual and use published labor times.

Parts are expected to be available on June 24, 1991. Until then, normal part orders will not be accepted by GMSPO.
Only verifiable emergency VIP orders will be accepted. SPO will make every effort to obtain parts. All parts will be placed on
400 control to waive VIP surcharges. However, the part will be shipped premium transportation at dealer's expense. All other order types will be cancelled as incorrectly ordered while the 400 control is in place.