INADEQUATE AM RECEPTION (CHECK ANTENNA GROUND). Chevrolet Monte Carlo 1995

SUBJECT: INADEQUATE AM RECEPTION (CHECK ANTENNA GROUND/CABLE)

MODELS: 1995 CHEVROLET LUMINA, MONTE CARLO

CONDITION:

RECEPTION ON THE AM BAND OF THE RADIO MAY BE INADEQUATE ON VEHICLES BUILT BEFORE OCTOBER, 1994.

CAUSE:

1. INADEQUATE GROUND AT THE REAR FENDER MOUNTED ANTENNA BASE ASSEMBLY, CAUSED BY UNDER-TORQUING OF THE ATTACHMENT NUT. THE NUT MUST BE TIGHT ENOUGH TO CAUSE THE STAR WASHER BELOW THE SHEET METAL TO CUT THROUGH THE PAINT TO PROVIDE A GOOD GROUND.

2. ANTENNA LEAD-IN CABLE MAY NOT BE FULLY PLUGGED INTO THE RECEPTACLE AT THE BACK OF THE RADIO.

3. IN RARE INSTANCES, THE CRIMP ON THE ANTENNA LEAD-IN CABLE AT THE RADIO END MAY BE INSUFFICIENT, OR THE LEAD-IN MAY HAVE BEEN DAMAGED IN THE PLANT.

ALL THE ABOVE ITEMS WERE CORRECTED IN PRODUCTION AFTER APPROXIMATELY 10/1/94.

CORRECTION:

1. THE NUT ON THE FENDER ANTENNA MOUNTING BRACKET SHOULD BE TORQUED TO AT LEAST 10 N.M (90 LB.IN.).

2. CHECK THE ANTENNA LEAD-IN CONNECTION AT THE REAR OF THE RADIO. ON EARLY BUILT VEHICLES, THIS MAY NOT HAVE BEEN FULLY SEATED. IF IT IS LOOSE, PUSH IN UNTIL A CLICK IS FELT, INDICATING A GOOD CONNECTION.

THESE TWO CORRECTIONS SHOULD CORRECT MOST VEHICLES. IF THE CONDITION STILL EXISTS, REMOVE BOTH ENDS OF THE ANTENNA LEAD-IN CABLE, AND CHECK THE RESISTANCE WITH A DIGITAL OHMMETER. A GOOD ANTENNA SHOULD HAVE RESISTANCE IN THE MILLI-OHM RANGE. IF THE RESISTANCE IS HIGHER THAN 10 MILLI-OHMS, REPLACE THE CABLE, P/N 10248598.

PART AVAILABILITY:

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION: R0240 (CHECKING ANTENNA BASE) USE PUBLISHED LABOR OPERATION TIME. R0260 (CHECKING OR REPLACING LEAD-IN) - PUBLISHED TIME WILL BE INCREASED TO 0.8 HRS.

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.