CAMPAIGN: ENGINE FAN FAILURES INSTALL NEW DESIGNED ASSEMBLY

REVISION 02/09/93

THIS REVISION ADDS A LABOR OPERATION FOR THE INSPECTION OF TRUCKS THAT HAVE AFTERMARKET A/C SYSTEMS INSTALLED RESULTING IN A PREVIOUS REPLACEMENT OF THE FAN.

REVISION 01/08/93

SUBJECT: NON-A/C ENGINE FAN FAILURES

MODELS: 1989-1992 S PICKUPS WITH A 2.5L ENGINE (RPO LN8/L38) WITHOUT AIR CONDITIONING (RPO C42)

THE NATIONAL TRAFFIC AND MOTOR VEHICLE SAFETY ACT, AS AMENDED, PROVIDES THAT EACH VEHICLE WHICH IS SUBJECT TO A RECALL CAMPAIGN OF THIS TYPE MUST BE ADEQUATELY REPAIRED WITHIN A REASONABLE TIME AFTER THE OWNER HAS TENDERED IT FOR REPAIR. A FAILURE TO ADEQUATELY REPAIR WITHIN 60 DAYS AFTER TENDER OF A VEHICLE IS PRIMA FACIE EVIDENCE OF FAILURE TO REPAIR WITHIN A REASONABLE TIME.

IF THE CONDITION IS NOT ADEQUATELY REPAIRED WITHIN A REASONABLE TIME, THE OWNER MAY BE ENTITLED TO AN IDENTICAL OR REASONABLY EQUIVALENT VEHICLE AT NO CHARGE, OR TO A REFUND OF THE PURCHASE PRICE LESS A REASONABLE ALLOWANCE FOR DEPRECIATION.

TO AVOID HAVING TO PROVIDE THESE BURDENSOME SOLUTIONS, EVERY EFFORT MUST BE MADE TO PROMPTLY SCHEDULE APPOINTMENTS WITH OWNERS AND TO REPAIR THEIR VEHICLES AS SOON AS POSSIBLE. AS YOU WILL SEE IN READING THE ATTACHED COPY OF THE LETTER WHICH IS BEING SENT TO OWNERS, THE OWNER IS BEING INSTRUCTED TO CONTACT THE NEAREST (DIVISION) ZONE OFFICE IF THE DEALER DOES NOT REMEDY THE CONDITION WITHIN FIVE DAYS OF THE MUTUALLY AGREED UPON SERVICE DATE. IF THE CONDITION IS NOT REMEDIED WITHIN A REASONABLE TIME, THEY ARE INSTRUCTED HOW TO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION.

DEFECT INVOLVED

GENERAL MOTORS HAS DETERMINED THAT A DEFECT WHICH RELATES TO MOTOR VEHICLE SAFETY EXISTS IN CERTAIN 1989-1992 S PICKUPS EQUIPPED WITH A 2.5L ENGINE (RPO LN8/L38) AND WITHOUT AIR CONDITIONING. THESE VEHICLES MAY EXHIBIT FAN BLADE BREAKAGE AS A RESULT OF FATIGUE CAUSED BY ENGINE AND/OR VEHICLE INDUCED STRESS.

IF THIS OCCURS WHILE THE HOOD IS OPEN, A PERSON WORKING UNDER THE HOOD OF THE VEHICLE OR IN THE VICINITY OF THE VEHICLE COULD BE STRUCK BY THE BLADE SEGMENT AND INJURED.

TO PREVENT THIS CONDITION FROM OCCURRING, DEALERS ARE TO INSTALL A NEWLY DESIGNED FAN ASSEMBLY WITH LONGER FASTENERS.

VEHICLES INVOLVED

INVOLVED ARE CERTAIN 1989-1992 S PICKUPS EQUIPPED WITH A 2.5L ENGINE (RPO LN8/L38) AND WITHOUT AIR CONDITIONING BUILT WITHIN THE FOLLOWING VIN BREAKPOINTS

TRUCK VIN INFORMATION

MODEL PLANT FROM THROUGH

GMC MORAINE SOP 1989 N2507290 GMC SHREVEPORT SOP 1989 N8506213 GMC PONTIAC WEST SOP 1989 N0504092

CHEVROLET VIN INFORMATION

YEAR MODEL PLANT FROM THROUGH

1989 S10 2WD MORAINE "2" K2100001 K2280255 1989 S10 2WD SHREVEPORT "8" K8100043 K8256110

1990 S10 2WD MORAINE "2" L2100009 L2153307 1990 S10 2WD SHREVEPORT "8" L8100013 L8148819

1991 S10 2WD PONTIAC WEST "0" M0119593 M0212614 1991 S10 2WD MORAINE "2" M2100003 M2325890 1991 S10 2WD SHREVEPORT "8" M8100005 M8312547

1992 S10 2WD PONTIAC WEST "0" N0100001 N0111321 1992 S10 2WD MORAINE "2" N2100067 N2124793 1992 S10 2WD SHREVEPORT "8" N8100001 N8129251

THE SPECIFIC VEHICLES INVOLVED IN THIS CAMPAIGN HAVE BEEN IDENTIFIED BY VEHICLE IDENTIFICATION NUMBER COMPUTER LISTINGS. THESE LISTINGS ARE FURNISHED TO ALL INVOLVED DEALERS WITH THE CAMPAIGN BULLETIN. DEALERS SHOULD CONFIRM VEHICLE ELIGIBILITY THROUGH VISS (VEHICLE INFORMATION SERVICE SYSTEM) PRIOR TO BEGINNING CAMPAIGN REPAIRS.

DEALER CAMPAIGN RESPONSIBILITY

ALL UNSOLD VEHICLES IN DEALERS' POSSESSION AND SUBJECT TO THIS CAMPAIGN MUST BE HELD AND INSPECTED/REPAIRED PER THE SERVICE PROCEDURE OF THIS CAMPAIGN BULLETIN BEFORE OWNERS TAKE POSSESSION OF THESE VEHICLES.

DEALERS ARE TO SERVICE ALL VEHICLES SUBJECT TO THIS CAMPAIGN AT NO CHARGE TO OWNERS, REGARDLESS OF MILEAGE, AGE OF VEHICLE, OR OWNERSHIP, FROM THIS TIME FORWARD.

OWNERS OF VEHICLES RECENTLY SOLD FROM YOUR VEHICLE INVENTORY ARE TO BE CONTACTED BY THE DEALER AND ARRANGEMENTS MADE TO MAKE THE REQUIRED CORRECTION ACCORDING TO INSTRUCTIONS CONTAINED IN THIS BULLETIN.

IN SUMMARY, WHENEVER A VEHICLE SUBJECT TO THIS CAMPAIGN ENTERS YOUR VEHICLE INVENTORY, OR IS IN YOUR DEALERSHIP FOR SERVICE IN THE FUTURE, PLEASE TAKE THE STEPS NECESSARY TO BE SURE THE CAMPAIGN CORRECTION HAS BEEN MADE BEFORE SELLING OR RELEASING THE VEHICLE.

IF THE NAME AND ADDRESS OF THE OWNER OF AN INVOLVED VEHICLE WAS UNAVAILABLE TO (DIVISION) AT THE TIME OF CAMPAIGN INITIATION, THE DEALER MUST DETERMINE THE OWNER'S NAME AND ADDRESS FROM THE DEALERSHIP SALES RECORDS. PLEASE PROVIDE THIS INFORMATION DIRECTLY ON THE SECOND COPY OF THE LISTING NEXT TO THE APPLICABLE VIN SO THAT OUR RECORDS MAY BE UPDATED AND THE APPROPRIATE NOTIFICATION MAILED TO THE OWNER. THIS SECOND COPY SHOULD THEN BE SUBMITTED TO THE ADDRESS LISTED BELOW IN THE PREVIOUSLY SUPPLIED YELLOW CAMPAIGN ENVELOPES.

(DIVISION) GENERAL MOTORS CORPORATION (DIVISION'S ADDRESS)

OWNER NOTIFICATION

OWNERS WILL BE NOTIFIED OF THIS CAMPAIGN ON THEIR VEHICLES BY (DIVISION) (SEE COPY OF OWNER LETTER INCLUDED WITH THIS BULLETIN). A LISTING OF OWNER NAMES AND ADDRESSES HAS BEEN FURNISHED TO THE INVOLVED DEALERS TO ENABLE DEALERS TO FOLLOW UP WITH OWNERS INVOLVED IN THIS CAMPAIGN. THIS LISTING 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 TO THIS CAMPAIGN.

SERVICE PROCEDURE:

1. DISCONNECT THE NEGATIVE BATTERY CABLE.

2. REMOVE THE UPPER FAN SHROUD.

3. REMOVE THE FAN AND CLUTCH ASSEMBLY BY REMOVING THE FOUR (4) NUTS (FIGURE 1, "7").

4. REMOVE THE FAN FROM THE CLUTCH BY REMOVING THE FOUR (4) BOLTS (FIGURE 1, "4"), DISCARD THE USED BOLTS AND FAN.

IMPORTANT: INSPECT ALL THE MOUNTING SURFACES FOR GOUGES, BURRS OR OTHER INCONSISTENCIES. THE MOUNTING SURFACES SHOULD BE CLEAN AND FLAT. VISUALLY INSPECT THE WATER PUMP HUB RUNOUT TO INSURE IT IS NOT BENT.

5. INSTALL THE NEW FAN ASSEMBLY (FIGURE 1, "2") USING THE FOUR (4) BOLTS PROVIDED (FIGURE 1, "4"), TO THE CLUTCH (FIGURE 1, "6"). TORQUE THE BOLTS TO 19 N.M (14 LBS. FT.).

6. CONNECT THE FAN AND FAN CLUTCH TO THE PULLEY (FIGURE 1.). TORQUE THE NUTS TO 24 N.M (17 LBS. FT.).

NOTE: TO MAINTAIN A BALANCED ASSEMBLY, ALIGN THE YELLOW PAINT MARK ON THE FAN CLUTCH WITH THE YELLOW PAINT MARK ON THE WATER PUMP HUB (FIGURE 2).

7. REPLACE THE UPPER FAN SHROUD.

8. CONNECT NEGATIVE BATTERY CABLE.

9. INSTALL "CAMPAIGN IDENTIFICATION LABEL."

PARTS INFORMATION

PARTS ARE TO BE OBTAINED FROM GENERAL MOTORS SERVICE PARTS OPERATION (GMSPO). TO ENSURE THAT THESE PARTS WILL BE OBTAINED AS SOON AS POSSIBLE, THEY SHOULD BE ORDERED FROM GMSPO ON A C.I.O. ORDER WITH NO SPECIAL INSTRUCTION CODE BUT ORDER UNDER AN ADVISE CODE (2).

PART NUMBER DESCRIPTION QUANTITY

15958125 BLADE ASM KIT-FAN 1

WARRANTY INFORMATION

DEALERS SHOULD SUBMIT AN ACCURATELY FILLED OUT WARRANTY REPAIR ORDER ON EACH VEHICLE COMPLETED UNDER THIS CAMPAIGN.

LABOR OPERATION *TIME OTH TROUBLE NUMBER DESCRIPTION ALLOWANCE HRS CODE

V7740 CLUTCH ASSEMBLY, FAN - REPLACE 0.4 HRS. 96

V7741 INSPECT UNABLE TO PERFORM 0.2 0.1 SK-00CHEV CAMPAIGN SINCE THE SUSPECT FAM BLADE HAS BEEN REMOVED (AFTERMARKET A/C INSTALLATION)

*FOR DEALER TO RECEIVE ADMINISTRATIVE TIME ALLOWANCE ASSOCIATED WITH THIS CAMPAIGN, ADD 0.1 HOUR TO THE LABOR OPERATION TIME ALLOWANCE.

CAMPAIGN IDENTIFICATION LABEL

EACH VEHICLE CORRECTED 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 CAMPAIGN NUMBER AND FIVE (5) DIGIT DEALER CODE OF THE DEALER PERFORMING THE CAMPAIGN SERVICE. THIS INFORMATION MAY BE INSERTED WITH A TYPEWRITER OR BALL POINT 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

PROCEDURES COVERING THIS CAMPAIGN ARE OUTLINED IN SECTION V OF YOUR DEALERSHIP'S "GM (DIVISION) CLAIMS PROCESSING MANUAL" #P9119.

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.

DEAR (DIVISION) TRUCK OWNER:

THIS NOTICE IS SENT TO YOU IN ACCORDANCE WITH THE REQUIREMENTS OF THE NATIONAL TRAFFIC AND MOTOR VEHICLE SAFETY ACT.

GENERAL MOTORS HAS DETERMINED THAT A DEFECT WHICH RELATES TO MOTOR VEHICLE SAFETY EXISTS IN CERTAIN 1989-1992 S PICKUPS EQUIPPED WITH A 2.5L ENGINE (RPO LN8/L38) AND WITHOUT AIR CONDITIONING. THESE VEHICLES MAY EXHIBIT FAN BLADE BREAKAGE AS A RESULT OF FATIGUE CAUSED BY ENGINE AND/OR VEHICLE INDUCED STRESS.

IF THIS OCCURS WHILE THE HOOD IS OPEN, A PERSON WORKING UNDER THE HOOD OF THE VEHICLE OR IN THE VICINITY OF THE VEHICLE COULD BE STRUCK BY THE BLADE SEGMENT AND INJURED.

TO PREVENT THIS CONDITION FROM OCCURRING, DEALERS ARE TO INSTALL A NEWLY DESIGNED FAN ASSEMBLY WITH LONGER FASTENERS. THIS SERVICE WILL BE COMPLETED FOR YOU AT NO CHARGE.

INSTRUCTIONS FOR PERFORMING THIS SERVICE HAVE BEEN SENT TO YOUR (DIVISION) DEALER. PLEASE CONTACT YOUR DEALER TO ARRANGE A SERVICE DATE. THE LABOR TIME NECESSARY TO PERFORM THIS CORRECTION SHOULD BE APPROXIMATELY 20 MINUTES. PLEASE ASK YOUR DEALER HOW MUCH ADDITIONAL TIME WILL BE NEEDED TO PROCESS YOUR VEHICLE.

YOUR (DIVISION) DEALER IS BEST EQUIPPED TO PROVIDE SERVICE TO ENSURE YOUR VEHICLE IS CORRECTED AS PROMPTLY AS POSSIBLE. HOWEVER, IF YOU TAKE YOUR VEHICLE TO YOUR DEALER ON THE AGREED SERVICE DATE AND THEY DO NOT SERVICE THIS CONDITION ON THAT DATE OR WITHIN FIVE DAYS, WE RECOMMEND YOU CONTACT YOUR NEAREST (DIVISION) TRUCK ZONE OFFICE BY TELEPHONE. THE ZONE OFFICE WILL ASSIST YOU AND YOUR DEALER IN GETTING YOUR VEHICLE CORRECTED. THE TELEPHONE NUMBERS OF THE ZONE OFFICES ARE LISTED IN YOUR WARRANTY AND OWNER ASSISTANCE INFORMATION MANUAL.

AFTER CONTACTING YOUR DEALER AND THE ZONE OFFICE, IF YOU ARE STILL NOT SATISFIED THAT WE HAVE DONE OUR BEST TO REMEDY THIS CONDITION WITHOUT CHARGE WITHIN A REASONABLE TIME, YOU MAY WISH TO WRITE THE ADMINISTRATOR, NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, 400 SEVENTH STREET, S.W., WASHINGTON, D.C. 20590, OR CALL 800-424-9393 (WASHINGTON, D.C. RESIDENTS USE 366-0123).

THE ENCLOSED POSTAGE PAID OWNER REPLY CARD IDENTIFIES YOUR VEHICLE. PRESENTATION OF THIS CARD TO YOUR DEALER WILL ASSIST IN MAKING THE NECESSARY CORRECTION TO YOUR VEHICLE IN THE SHORTEST POSSIBLE TIME. IF YOU HAVE SOLD OR TRADED YOUR VEHICLE, PLEASE FURNISH US COMPLETE NAME AND ADDRESS OF THE PERSON YOU SOLD OR TRADED YOUR VEHICLE TO AND RETURN THE CARD TO US.

WE ARE SORRY TO CAUSE YOU THIS INCONVENIENCE; HOWEVER, WE HAVE TAKEN THIS ACTION IN THE INTEREST OF YOUR SAFETY AND CONTINUED SATISFACTION WITH OUR PRODUCT.

(DIVISION) GENERAL MOTORS CORPORATION