TORQUE CONVERTER CLUTCH (TCC) CHUGGLE/HUNTING COND.

SUBJECT: TORQUE CONVERTER CLUTCH (TCC) CHUGGLE/HUNTING CONDITION (INSTALL TIME DELAY MODULE KIT)

MODELS: 1989-95 GEO TRACKER WITH HYDRA-MATIC 3L30 AUTOMATIC TRANSMISSION

CONDITION:

SOME OWNERS MAY EXPERIENCE A TORQUE CONVERTER CLUTCH (TCC) CHUGGLE/HUNTING CONDITION.

TCC CHUGGLE/HUNTING OCCURS WITH THE VEHICLE AT NORMAL OPERATING TEMPERATURE, IN 3RD GEAR, AT APPROXIMATELY 40-45 MPH ON A LEVEL ROAD ON A SLIGHT GRADE (MOSTLY OCCURRING WHEN DRIVING UPHILL), THE ENGINE SPEED AT APPROXIMATELY 2500-2700 RPM AND WITH THE THROTTLE OPENING AT APPROXIMATELY 10-50 PERCENT. UNDER THESE CONDITIONS, RAPID, REPEATED APPLY/RELEASE OF THE CONVERTER CLUTCH MAY CAUSE A BUCKING OR JERKING SENSATION.

CAUSE:

THIS CONCERN IS DUE TO GOVERNOR PRESSURE SWITCH INSTABILITY WHEN THE VEHICLE SPEED IS CONSTANT AT TCC APPLY.

CORRECTION:

INSTALL THE TIME DELAY MODULE KIT INTO THE TCC RELAY CIRCUIT TO ADDRESS THE TCC CHUGGLE/HUNTING CONDITION.

SERVICE INFORMATION:

WHEN SERVICING A TRANSMISSION FOR A TCC CHUGGLE/HUNTING CONDITION, INSTALL THE TIME DELAY MODULE KIT TO RESOLVE THIS CONDITION.

TCC APPLY TIME DELAY MODULE INSTALLATION INSTRUCTIONS: 1. DISCONNECT THE BATTERY. (FIGURE 2) 2. DISCONNECT THE GREEN CONNECTOR OF THE TCC RELAY. (FIGURE 2) 3. DISCONNECT THE WHITE WIRE FROM THE GREEN CONNECTOR. REMOVE THE TERMINAL CAREFULLY WITH A NARROW SCREWDRIVER AS INDICATED.(FIGURE 1) 4. CONNECT THE WHITE WIRE TO THE TIME DELAY MODULE (FIGURE 4) AND CONNECT THE RED WIRE FROM THE TIME DELAY MODULE IN PLACE OF THE WHITE WIRE TO THE CONNECTOR BODY OF THE TCC RELAY. (FIGURE 4) 5. RECONNECT THE GREEN CONNECTOR TO THE TCC RELAY AND INSTALL THE TCC RELAY ONTO THE RELAY CENTER. 6. CLIP THE TIME DELAY MODULE ONTO THE A/C FAN RELAY. (FIGURE 3) IMPORTANT: IF THE VEHICLE IS NOT EQUIPPED WITH AIR CONDITIONING, INSTALL THE RUBBER CONNECTOR FROM THE KIT ONTO THE FUSE BOX TAB AND THEN CLIP THE TIME DELAY MODULE ONTO THE RUBBER CONNECTOR.

PARTS INFORMATION:

PART NUMBER DESCRIPTION 96041311 KIT, TIME DELAY MODULE INCLUDES: TIME DELAY MODULE RUBBER CONNECTOR INSTRUCTION SHEET

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION: K6108 0.2 HOUR

FIGURES: 4 ATTACHMENTS: 0

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.

COPYRIGHT 1995. GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.