For 1990-2009 cars

# CLUNK NOISE FROM ENGINE COMPARTMENT

#### SUBJECT: CLUNK NOISE FROM ENGINE COMPARTMENT WHEN CRUISE CONTROL IS DISENGAGED WITH BRAKE PEDAL (RECALIBRATE CRUISE CONTROL)

#### MODELS: 1997 CADILLAC CATERA

#### CONDITION:

SOME OWNERS MAY COMMENT ABOUT A CLUNK NOISE HEARD FROM THE ENGINE COMPARTMENT AREA WHEN THE CRUISE CONTROL IS DISENGAGED WITH THE BRAKE PEDAL. THIS SOUND MAY NOT BE HEARD WHEN THE CRUISE CONTROL IS DISENGAGED USING THE OFF SWITCH ON THE TURN SIGNAL LEVER.

#### CAUSE:

THE CLUNK NOISE MAY BE CAUSED BY THE ACCELERATOR LINKAGE CLOSING TOO QUICKLY AGAINST THE THROTTLE STOP WHEN THE CRUISE CONTROL IS DISENGAGED WITH THE BRAKE PEDAL.

#### CORRECTION:

THE CRUISE CONTROL CAN BE RECALIBRATED USING THE TECH 2 TO ELIMINATE THIS CONDITION. THE NEW CALIBRATION IS AVAILABLE ON TECHLINE CD #5, RELEASED IN MARCH, 1997. CRUISE CONTROL DIAGNOSTIC AND PROGRAMMING FUNCTIONS CAN BE FOUND IN THE BODY MENU ON THE TECH 2. AFTER ENTERING THE CRUISE CONTROL WINDOW, SELECT "F4-PROGRAMMING" AND FOLLOW THE INSTRUCTIONS ON THE SCREEN. HOWEVER, WHEN THE TECH 2 INSTRUCTS TO "SEE SERVICE MANUAL BEFORE PROGRAMMING", PRESS THE "CONTINUE" BUTTON AND FOLLOW THE ADDITIONAL INSTRUCTIONS SINCE THERE IS NO INFORMATION IN THE CATERA SERVICE MANUAL ON PROGRAMMING THE CRUISE CONTROL MODULE.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OP: R1220 LABOR TIME: 0.3 HR.

FIGURES: 0 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 1997 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.