CLUTCH LINK BUZZ/MODULATION SERVICE REPAIR/CLUTCH

CLUTCH LINKAGE BUZZ AND CLUTCH MODULATION MAY OCCUR ON SOME CAMAROS WITH L4 ENGINES AND MANUAL TRANSMISSION. THE BUZZ IS MOST PREVALENT AT 2250 RPM OR 50 MPH WITH THE CLUTCH ENGAGED. THE NOISE STOPS WHEN THE PEDAL IS LOADED OR MERELY TOUCHED. CONDITION A MODULATION IS AN ERRATIC OR INCORRECT ENGAGEMENT OF THE CLUTCH. THE MODULATION IS IMPROVED BY INSTALLING A NEW PRESSURE PLATE, P/N 14066384, AND DRIVEN DISC, P/N 14075769. CONDITION B THE BUZZ IS CORRECTED BY INSTALLING A NEW BALL STUD AND MODIFYING THE CLUTCH LEVER BRACKET. THE NEW BALL STUD, P/N 14066968, SHOWN ON ATTACHED SKETCH #3, HAS DUAL SEALS TO BETTER RETAIN THE GREASE AND ISOLATE BALL FROM CORDON SHAFT. THE NEW BALL STUD AND ITS BORE IN THE CORDON SHAFT SHOULD BE THOROUGHLY GREASED AT INSTALLATION. THE BRACKET FOR THE CORDON SHAFT SHOULD BE MODIFIED AS SHOWN ON SKETCH #1 TO CLEAR THE LEVER WHEN THE CLUTCH IS RELEASED. IT IS CRITICAL THAT THE BOLTS ARE PROPERLY TORQUED AS SHOWN IN SKETCH #2. THE SPRING RETAINER CONNECTING THE PUSH ROD ASSEMBLY TO THE CORDON SHAFT LEVER MUST BE IN GOOD CONDITION. WHEN INSTALLED, THE SPRING RETAINER SHOULD IMPART A SIDE LOAD TO THE SHAFT AND LEVER. TRANSMISSION SHIFTER BUZZ MAY BE MORE APPARENT WHEN THE CLUTCH PEDAL BUZZ IS CORRECTED. CONDITION A LABOR OPERATION NUMBER: K0800 LABOR TIME: 1.7 HOURS CONDITION B LABOR OPERATION NUMBER: T0116 LABOR TIME: .5 HOURS TO REPLACE CLUTCH PILOT BEARING: .2 HOURS TO REPLACE FLYWHEEL: .2 HOURS

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.