DRIVELINE TORSIONAL VIBRATION LOW RPMS-REVISED CLUTCH P/N

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.

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.