CAMPAIGN: EMISSION AIR CLEANER INCORRECT HOSE ROUTING

GENERAL MOTORS HAS DETERMINED THAT SOME 1981 "G" VANS EQUIPPED WITH RPO LE3 (250 CID, 2 BBL, 4.1 LITRE L6 ENGINE) MAY HAVE THE HOSE CONNECTIONS TO THE TERMAL SWITCH ON THE AIR CLEANER ASSEMBLY REVERSED. IF NOT CORRECTED, THIS CONDITION WILL PREVENT PROPER OPERATION OF THE THERMAL SWITCH AND COULD AFFECT ACCELERATION PERFORMANCE AT COLDER TEMPERATURES.

TO BRING THESE VEHICLES INTO COMPLIANCE WITH APPLICABLE EMISSION REGULATIONS, CHEVROLET DEALERS ARE TO MAKE THE NECESSARY MODIFICATION IN THE HOSE ROUTING PER THE SERVICE PROCEDURE OUTLINED IN THIS CAMPAIGN BULLETIN.

VEHICLES INVOLVED

INVOLVED ARE CERTAIN 1981 "G" VANS EQUIPPED WITH RPO LE3 (250 CID, 2 BBL, 4.1 LITRE ENGINE) ASSEMBLED AT SCARBOROUGH WITHIN THE FOLLOWING BREAKPOINTS:

PLANT FROM THROUGH

SCARBOROUGH 2G8DG15D9B4100984 2GCDG15D4B4103233

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 PUPOSE 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 CAMPAGIN.

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. REMOVE ENGINE COVER.

2. LOCATE TERMAL VACUUM SWITCH (TVS) ON AIR CLEANER ASSEMBLY. (SEE ILLUSTRATION)

3. DISCONNECT BOTH HOSES FROM TVS SWITCH.

4. CONNECT BLACK HOSE TO TVS PORT NEAREST AIR CLEANER.

5. CONNECT HOSE WITH BROWN STRIPE TO TVS PORT FARTHEST FROM AIR CLEANER. ASSURE THAT HOSES ARE NOT KINKED.

6. INSTALL ENGINE COVER.

CLAIM INFORMATION

SUBMIT A PRODUCT CAMPAIGN CLAIM WITH THE INFORMATION INDICATED BELOW:

FAILURE LABOR LABOR *OTHER CODE OPERATION HOURS HOURS

00 V0830 .3 .1

DESCRIPTION: LOCATE AND REROUTE THERMAL VACUUM SWITCH HOSES AT AIR CLEANER ASSEMBLY.

* CAMPAIGN ADMINISTRATIVE ALLOWANCE

DEALERS WILL AUTOMATICALLY RECEIVE THE 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 IDENTIFICAITON LABEL" IS TO BE LOCATED ON THE REAIDTOR 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.