M/T - Reduction of Transmission Rattle
85-1707C
DEC., 1985
Subject: REDUCTION OF TRANSMISSION GEAR RATTLE
Model end Year: 1985 S/T MODELS WITH MANUAL
TRANSMISSIONS AND 2.5L (LN8) ENGINES
TO: ALL CHEVROLET DEALERS
A transmission gear rattle or vibration condition noticeable during deceleration on some 1985 S/T models with the 2.5L (LN8) engine may be reduced by replacement of the clutch driven disc with a revised clutch driven disc, P/N 15550410.
Engines equipped with the revised disc were used in production beginning with the following VIN:
Pontiac - F0201638
Shreveport - F8Z47683
Moraine - F2238716
This disc will also be used on the 2.8L V6 engine beginning with the 1986 model year.