CAMPAIGN:INCORRECT SPEEDOMETER DRIVEN GEAR. Chevrolet Monte Carlo 1981

GENERAL MOTORS HAS DETERMINED THAT SOME 1981 MALIBU, MALIBU CLASSIC STATION WAGON AND EL CAMINO MODELS WERE ASSEMBLED WITH THE INCORRECT SPEEDOMETER DRIVEN GEARS.

THE INCORRECT SPEEDOMETER DRIVEN GEAR WILL RESULT IN THE SPEEDOMETER INDICATING A VEHICLE SPEED WHICH IS APPROXIMATELY 10% SLOWER THAN THE ACTUAL VEHICLE SPEED. FOR EXAMPLE, WHEN THE ACTUAL VEHICLE SPEED IS 50 MPH, THE SPEEDOMETER WILL INDICATE APPROXIMATLEY 45 MPH.

TO CORRECT THIS CONDITION, THE SPEEDOMETER DRIVEN GEAR WILL BE REPLACED IN ALL INVOLVED VEHICLES.

VEHICLES INVOLVED

INVOLVED ARE SOME 1981 MALIBU, MALIBU CLASSIC STATION WAGON AND EL CAMINO MODELS EQUIPPED WITH RPO LD5 (CALIFORNIA V6) ENGINE, RPO M31 THM 250 AUTOMATIC TRANSMISSION AND 2.73:1 REAR AXLE WITHIN THE FOLLOWING PARAMETERS:

PLANT FROM THROUGH

ARLINGTON BR433093 BR446830

FREMONT BZ414003 BZ420180

INVOLVED VEHICLES HAVE BEEN IDENTIFIED BY VEHICLE IDENTIFICATION NUMBER COMPUTER LISTINGS. COMPUTER LISTINGS CONTAIN THE COMPLETE VEHICLE IDENTIFICATION NUMBER, OWNER NAME AND ADDRESS DATA, AND ARE FURNISHED TO THE INVOLVED DEALERS WITH THE CAMPAIGN BULLETIN. OWNER NAME AND ADDRESS DATA FURNISHED WILL ENABLE DEALERS TO FOLLOW UP WITH OWNERS INVOLVED IN THIS CAMPAIGN.

THESE LISTINGS MAY CONTAIN OWNER NAMES AND ADDRESSES OBTAINED FROM STATE MOTOR VEHICLE REGISTRATION RECORDS. THE USE OF SUCH MOTOR VEHICLE REGISTRATION DATA FOR ANY OTHER PURPOSE IS A VIOLATION OF LAW IN SEVERAL STATES. ACCORDINGLY, YOU ARE URGED TO LIMIT THE USE OF THIS LISTING FOR THE FOLLOW UP NECESSARY TO COMPLETE THIS CAMPAIGN.

OWNER NOTIFICATION

OWNERS WILL BE NOTIFIED OF THIS CAMPAIGN ON THEIR VEHICLES BY CHEVROLET MOTOR DIVISION (SEE COPY OF OWNER LETTER INCLUDED WITH THIS BULLETIN).

DEALER CAMPAIGN RESPONSIBILITY

THIS RECALL CAMPAIGN IS TO BE PERFORMED AT NO CHARGE TO OWNERS ON ALL AFFECTED VEHICLES REGARDLESS OF TIME, MILEAGE, OR OWNERSHIP. DEALERS ARE TO INSPECT AND CORRECT ALL AFFECTED VEHICLES IN NEW AND USED VEHICLE STOCK PRIOR TO THEIR SALE.

WHENEVER A VEHICLE SUBJECT TO THIS CAMPAIGN IS TAKEN INTO YOUR NEW OR USED VEHICLE INVENTORY, OR IT IS IN YOUR DEALERSHIP FOR SERVICE IN THE FUTURE, YOU SHOULD TAKE THE STEPS NECESSARY TO BE SURE THE CAMPAIGN CORRECTION HAS BEEN MADE.

SERVICE PROCEDURE

1. RAISE VEHICLE

2. DISCONNECT SPEEDOMETER CABLE

3. REMOVE RETAINER BOLT, RETAINER, SPEEDOMETER DRIVEN GEAR AND "O" RING SEAL AS SHOWN IN FIGURE 7A-41, PAGE 7A-20 OF THE 1981 CHEVROLET SERVICE MANUAL.

4. INSTALLATION OF SPEEDOMETER DRIVEN GEAR IS THE REVERSE OF REMOVAL.

5. INSTALL "CAMPAIGN IDENTIFICATION LABEL" ACCORDING TO THE INSTRUCTIONS CONTAINED IN THIS BULLETIN.

PARTS INFORMATION

PARTS REQUIRED TO COMPLETE THIS CAMPAIGN ARE TO BE ORDERED BY THE DEALER FROM THE GENERAL MOTORS WAREHOUSING AND DISTRIBUTION DIVISION (GMWDD). QUANTITY PER PART NUMBER VEHICLE DESCRIPTION

3987920 1 SPEEDOMETER DRIVEN GEAR

CALIM INFORMATION

SUBMIT A PRODUCT CLAIM WITH THE INFORMATION INDICATED BELOW:

PARTS FAILED **PARTS FAILURE LABOR LABOR *OTHER COUNT PART NO. ALLOWANCE CODE OPERATION HOURS HOURS

1 3987920 00 V0920 .3 .1

DESCRIPTION REPLACE SPEEDOMETER DRIVEN GEAR.

*CAMPAIGN ADMINISTRATIVE ALLOWANCE

** THE PARTS ALLOWANCE SHOULD BE THE SUM TOTAL OF THE CURRENT GMWDD DEALER NET PLUS 30% OF ALL PARTS REQUIRED FOR THE REPAIR.

DEALERS WILL AUTOMATICALLY RECEIVE THE CORRECT PARTS AND LABOR ALLOWANCE BASED ON THE LABOR OPERATION PERFORMED.

REFER TO THE CHEVROLET CLAIMS PROCESSING MANUAL FOR DETAILS ON PRODUCT CAMPAIGN CLAIM SUBMISSION.

CAMPAIGN IDENTIFICATION LABEL

EACH VEHICLE MODIFIED IN ACCORDANCE WITH THE INSTRUCTIONS OUTLINED IN THIS PRODUCT CAMPAIGN BULLETIN WILL REQUIRE A "CAMPAIGN IDENTIFICATION LABEL". EACH LABEL PROVIDES A SPACE TO INCLUDE THE FIVE DIGIT DEALER CODE OF THE DEALER PERFORMING THE CAMPAIGN SERVICE. THIS INFORMATION MAY BE INSERTED WITH A TYPEWRITER OR BALLPOINT PEN.

EACH "CAMPAIGN IDENTIFICATION LABEL" IS TO BE LOCATED ON THE RADIATOR CORE SUPPORT IN AN AREA WHICH WILL BE VISIBLE WHEN THE VEHICLE IS BROUGHT IN FOR PERIODIC SERVICING BY THE OWNER.

APPLY "CAMPAIGN IDENTIFICATION LABEL" ONLY ON A CLEAN DRY SURFACE.

ADMINISTRATIVE PROCEDURE

REFER TO THE CURRENT CHEVROLET SERVICE POLICIES AND PROCEDURES MANUAL AND CLAIMS PROCESSING MANUAL FOR CAMPAIGN HANDLING AND ADMINISTRATIVE PROCEDURES.

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.