Clutch - Chatter/Shudder on Launch

File In Section: 7 - Transmission

Bulletin No.: 66-73-04

Date: August, 1996

Subject:
Clutch Chatter/Shudder on Launch
(Install Clutch Kit)

Models:
1994-95 Chevrolet and GMC C/K 1, 2, 3 & P3 Models with 5.7L V8 Engine (VIN K - RPO LOS) and Manual Transmission

Condition

Some owners may report clutch chatter or shudder when launching the vehicle from a stop.

Correction

The following components should be installed:

Clutch kit with revised tuning
(disc and pressure plate assembly)

Release bearing with a steel sleeve

Release fork with corrected fork tip radius

New pilot bearing

Service Procedure

Follow the appropriate Service Manual procedure, Section 70 - Clutch, for clutch assembly replacement.

Important:
Align the light side of the pressure plate assembly, identified by a paint dot near a bolt hole, with the heavy side of the flywheel, identified by an "X." Tighten each pressure plate bolt one turn at a time to evenly compress the spring and avoid warping the pressure plate assembly.

Torque the pressure plate bolts to 40 Nm (29 lb ft).

Parts Information

P/N Description Qty

12388069 Clutch Kit, MG5 1
12388071 Clutch Kit, MT8/MW3 1
15613306 Clutch Release Bearing 1
12385352 Clutch Fork 1
14061665 Clutch Pilot Bearing 1

Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor
Operation Description Labor Time

Clutch Disc Use Published Labor
K0800 and/or Cover - Operation Time
Replace

Important:
Labor operation is coded to base vehicle coverage in the warranty system.