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For 1990-2009 cars only

RADIO SPEAKER BUZZ AT LOW VOLUME (CORRECT WIRING)

SUBJECT: RADIO SPEAKER BUZZ AT LOW VOLUME (CORRECT WIRING)

MODELS: 1994 PONTIAC GRAND PRIX

CONDITION:

THE CUSTOMER MAY COMMENT ON A RADIO BUZZ OR HUM, USUALLY HEARD AT IDLE, AT LOW VOLUME SETTING, WHICH VARIES WITH ENGINE SPEED. ONE OR MORE SPEAKERS MAY BE AFFECTED. NORMAL DRIVING NOISES USUALLY ARE LOUDER THAN THE NOISE.

CAUSE:

THE SPEAKER WIRES MAY BE ROUTED TOO CLOSE TO THE IGNITION FEED WIRES IN THE MAIN I/P HARNESS. THIS WAS CORRECTED IN PRODUCTION ABOUT JANUARY 1, 1994.

CORRECTION:

DETERMINE WHICH SPEAKERS ARE AFFECTED BY LISTENING TO EACH INDIVIDUAL SPEAKER, USING THE BALANCE AND FADE CONTROLS. THE WIRING FOR THE AFFECTED SPEAKERS SHOULD BE RE-ROUTED, FOLLOWING THE INSTRUCTIONS IN WIRING KIT, P/N 12166020.

THE WIRING KIT CONTAINS WIRING TO CORRECT TWO SPEAKERS. IF MORE THAN TWO SPEAKERS ARE AFFECTED, TWO KITS WILL HAVE TO BE ORDERED.

AFTER INSTALLING THE NEW SPEAKER WIRES, LISTEN TO THE RADIO TO INSURE THAT THE ROUTING ELIMINATES THE NOISE. SOME ADJUSTING OF THE WIRE'S POSITION MAY BE NEEDED TO COMPLETELY ELIMINATE THE NOISE. WHEN THE NOISE IS GONE, THEN TAPE THE WIRES IN PLACE PERMANENTLY.

PART AVAILABILITY:

PARTS ARE EXPECTED TO BE AVAILABLE ON 6/20/94 AT GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION: N6285 (FRONT SPEAKER) N6430 (REAR SPEAKER) USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 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 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.