Driveline - Low RPM Torsional Vibration

87chevy16

Number: 87-189

Section: 7B

Date: July, 1987
SUBJECT: DRIVELINE TORSIONAL VIBRATION


MODELS: 1984-1987 S/T TRUCKS WITH MANUAL TRANSMISSIONS
Some 1984-87 S/T trucks that experience driveline torsional vibration (noticeable at low engine RPM) may be repaired by installing a revised clutch plate, which incorporates a longer dampener travel to remove vibration.

P/N 15608690 Plate Assembly 2.5L (LN8)
P/N 15608691 Plate Assembly 2.8L (LL2)

The above parts are not presently used in production.