CAMPAIGN: IDLE STOP SOLENOID JUMPER WIRE ASSEMBLY OMITTED

GENERAL MOTORS HAS DETERMINED THAT SOME 1981 CHEVROLET CITATIONS EQUIPPED WITH A V6 ENGINE AND MANUAL TRANSMISSION WERE ASSEMBLED WITHOUT THE REQUIRED IDLE STOP SOLENOID JUMPER WIRE (INCLUDING DIODE). WITHOUT A DIODE AND WHEN THE SOLENOID IS DE-ENERGIZED, A VOLTAGE TRANSIENT IS GENERATED IN THE ELECTRICAL SYSTEM SUFFICIENT TO "RESET" THE ECM (ENGINE COMPUTER COMMAND MODULE). THE RESET ERRONEOUSLY ACTIVATES THE "CHECK ENGINE" LAMP WHICH IS A MISLEADING INDICATION OF SYSTEM FUNCTIONING. IN ADDITION, THE BRAKE AND CLUTCH SWITCHES WHICH DEACTIVATE THE IDLE STOP SOELNOID WERE IMPROPERLY WIRED (IN SERIES RATHER THAN PARALLEL). THIS CONDITION RESULTS IN LOWER ENGINE IDLE SPEED.

VEHICLES INVOLVED

INVOLVED ARE CERTAIN 1981 CHEVROLET CITATIONS EQUIPPED WITH A V6 ENGINE, MANUAL TRANSMISSION AND WITHIN THE FOLLOWING VEHICLE BREAKPOINTS:

PLANT FROM THROUGH

TARRYTOWN 1G1AX68X1BT100056 1G1AX68X9BT103903 WILLOW RUN 1G1AX68X6BW100004 1G1AX08Y6BW100159

VEHICLES HAVE BEEN IDENTIFIED BY VEHICLE IDENTIFICATION NUMBER COMPUTER LISTINGS. THE LISTINGS HAVE BEEN FURNISHED TO INVOLVED DEALERS WITH THE CAMPAIGN BULLETIN. ANY DEALER NOT RECEIVING A COMPUTER LISTING WITH THE CAMPAIGN BULLETIN WAS NOT SHIPPED ANY INVOLVED VEHICLES.

OWNER NOTIFICATION

NO OWNER NOTIFICATION WILL BE REQUIRED SINCE ALL INVOLVED VEHICLES ARE IN DEALER STOCK.

DEALER CAMPAIGN RESPONSIBILITY

ALL INVOLVED VEHICLES ARE NOT TO BE SOLD BY THE DEALER UNTIL CAMPAIGN MODIFICATION HAS BEEN COMPLETED.

SERVICE PROCEDURE

IDLE STOP SOLENOID JUMPER WIRE REPLACEMENT

1. RAISE HOOD AND DISCONNECT BATTERY CABLES.

2. DISCONNECT THE GREEN WIRE WITH WHITE COLORED CONNECTOR FROM THE FAST IDLE SPEED SOLENOID.

3. INSTALL SAME TO BLACK CONNECTOR ON JUMPER WIRE ASSEMBLY.

4. PLUG JUMPER ASSEMBLY GREEN WIRE WITH A WHITE COLORED CONNECTOR INTO IDLE SPEED SOLENOID.

5. ROUTE BLACK WIRE WITH RING TERMINAL TO WATER PUMP STUD AND CONNECT AS SHOWN IN FIGURE 1.

6. STRAP JUMPER ASSEMBLY TO EXISTING STRAP.

CONTROL SWITCHES (BRAKE/CLUTCH)JUMPER WIRE ASSEMBLY REPLACEMENT

1. REMOVE THE WHITE 2-WIRE CONNECTOR FROM THE CLUTCH START SWITCH, AND REMOVE THE GREEN WIRES AND TERMINAL * FROM THIS CONNECTOR. ADJUST THE TERMINAL LOCK AND INSERT THESE WIRES IN THE CAVITY OF THE 8917583 CONNECTOR SUPPLIED IN PACKAGE. (NOTE: *TWO GREEN WIRES CON- NECTED TO ONE TERMINAL).

2. REMOVE THE 2-WIRE CONNECTOR FROM THE IDLE STOP BRAKE SWITCH, AND REMOVE THE BLUE WIRE AND TERMINAL FROM THIS CONNECTOR. ADJUST THE TERMINAL LOCK AND INSERT THIS WIRE IN THE CAVITY OF THE 2977253 CONNECTOR SUPPLIED IN PACKAGE.

3. CUT THE BROWN WIRES L INCH FROM CONDUIT END AND DISCARD THESE WIRES AND CONNECTORS WHICH WERE REMOVED IN STEPS 1 AND 2.

4. ADD THE JUMPER WIRING (12021369) SUPPLIED IN PACKAGE BY:

A. CONNECTING 8917580 CONNECTOR TO THE 8917583 CONNECTOR IN STEP 1.

B. CONNECTING 8900420 CONNECTOR TO THE 2977253 CONNECTOR IN STEP 2.

C. CONNECTING THE 12015340 CONNECTOR TO THE CLUTCH START SWITCH.

D. CONNECTING THE 12010649 CONNECTOR TO THE IDLE STOP BRAKE SWITCH.

E. ADD TAPE TO PROVIDE A NEAT AND RELIABLE INSTALLATION.

PARTS INFORMATION

PARTS REQUIRED TO COMPLETE THESE MODIFICATIONS ARE TO BE OBTAINED FROM YOUR CHEVROLET ZONE SERVICE DEPARTMENT.

PART NUMBER QUANTITY PER VEHICLE DESCRIPTION

12016335 1 IDLE STOP JUMPER WIRE ASSEMBLY

12026748 (PACKARD NUMBER) 1 (IP) JUMPER WIRE KIT NOTE: INCLUDES (1) 12021369 IP JUMPER WIRE ASSY (1) 2977253 CONNECTOR (1) 8917583 CONNECTOR

PARTS ARE BEING FURNISHED TO THE DEALER ON A NO-CHARGE BASIS.

DEALERS ARE NOT TO ORDER OR RETURN THIS MATERIAL TO GENERAL MOTORS PARTS DIVISION.

CLAIM 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

4 12026748 1.20 00 V0550 .3 .1

DESCRIPTION: INSTALL IDLE STOP JUMPER WIRE ASSEMBLY P/N 12016335 AND (IP) JUMPER WIRE KIT P/N 12026748 PER THE SERVICE PROCEDURE OUTLINED IN THIS BULLETIN.

*CAMPAIGN ADMINISTRATIVE ALLOWANCE

30% OF DEALER NET ONLY FOR PARTS FURNISHED AT NO CHARGE BY CHEVROLET.

DEALERS WILL AUTOMATICALLY RECEIVE THE CORRECT PARTS AND LABOR ALLOWANCE BASED ON THE LABOR OPERATION PERFORMED. AMOUNTS ARE ENTERED ON CAMPAIGN CLAIMS TO ALLOW THE DEALER TO DEVELOP AN ACCOUNTS RECEIVABLE AMOUNT ONLY.

REFER TO THE CHEVROLET 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 PROCEDURE.

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.