CAMPAIGN:REAR BRAKE PIPE MAY CONTACT THE LEFT FRONT FENDER. GMC Truck Yukon

NOTE: GM OF CANADA VERSION OF 98049 IS LOCATED BELOW THE US VERSION ______________________________________________________________________

PRODUCT CAMPAIGNS 98049 OCTOBER, 1998

PRODUCT RECALL CAMPAIGN

PRODUCT SAFETY CAMPAIGN

SUBJECT: 98049 - REAR BRAKE PIPE MAY CONTACT THE LEFT FRONT FENDER WHEELHOUSE INNER PANEL

MODELS: 1998 CHEVROLET AND GMC C EXTENDED CAB PICKUPS AND 4- DOOR UTILITIES BUILT AT ARLINGTON ASSEMBLY PLANT

THE HIGHWAY 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 CUSTOMER HAS TENDERED IT FOR REPAIR. A FAILURE TO REPAIR WITHIN SIXTY (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 CUSTOMER 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 REMEDIES, EVERY EFFORT MUST BE MADE TO PROMPTLY SCHEDULE AN APPOINTMENT WITH EACH CUSTOMER AND TO REPAIR THEIR VEHICLE AS SOON AS POSSIBLE. AS YOU WILL SEE IN READING THE ATTACHED COPY OF THE DIVISIONAL LETTER THAT IS BEING SENT TO CUSTOMERS, THE CUSTOMERS ARE BEING INSTRUCTED TO CONTACT THE APPROPRIATE CUSTOMER ASSISTANCE CENTER IF THEIR DEALER DOES NOT REMEDY THE CONDITION WITHIN FIVE (5) DAYS OF THE MUTUALLY AGREED UPON SERVICE DATE. IF THE CONDITION IS NOT REMEDIED WITHIN A REASONABLE TIME, THEY ARE INSTRUCTED ON HOW TO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION.

DEFECT INVOLVED

GENERAL MOTORS HAS DECIDED THAT A DEFECT WHICH RELATES TO MOTOR VEHICLE SAFETY EXISTS IN CERTAIN 1998 C EXTENDED CAB PICKUPS AND 4-DOOR UTILITIES BUILT AT THE ARLINGTON ASSEMBLY PLANT. THESE VEHICLES MAY EXHIBIT A CONDITION IN WHICH THE REAR BRAKE FRONT PIPE MAY CONTACT THE LEFT FRONT FENDER WHEELHOUSE INNER PANEL JUST ABOVE THE CHASSIS FRAME. WITH THE BRAKE PIPE CONTACTING THE WHEELHOUSE INNER PANEL, A HOLE COULD BE WORN IN THE BRAKE PIPE DURING THE NORMAL LIFE OF THE VEHICLE. A SLOW LOSS OF BRAKE FLUID WOULD LIKELY OCCUR AT FIRST AND WOULD LIKELY BE NOTICED BY THE OPERATOR AS FLUID SPOTTING UNDER THE VEHICLE WHILE PARKED. IF ENOUGH FLUID WERE LOST, IT WOULD LIKELY BE NOTICED AS ADDITIONAL BRAKE PEDAL TRAVEL. IF THE BRAKE PIPE WORE VERY THIN, FOLLOWED BY A PANIC BRAKE APPLICATION THAT DEVELOPED ENOUGH PRESSURE TO RUPTURE THE BRAKE PIPE, THE RED BRAKE WARNING LIGHT IN THE INSTRUMENT CLUSTER WOULD ILLUMINATE, AND REAR BRAKE EFFECTIVENESS COULD BE REDUCED. THIS REDUCED REAR BRAKING EFFECTIVENESS COULD CAUSE INCREASED STOPPING DISTANCES. IF THIS OCCURRED AT A TIME WHEN MINIMUM STOPPING DISTANCE WAS REQUIRED, A VEHICLE CRASH WITHOUT PRIOR WARNING COULD OCCUR.

TO PREVENT THE POSSIBILITY OF THIS CONDITION OCCURRING, DEALERS ARE TO RELOCATE THE BRAKE PIPE POSITIONING CLIP, INSPECT THE BRAKE PIPE FOR WEAR, AND IF NECESSARY, REPLACE THE BRAKE PIPE.

VEHICLES INVOLVED

INVOLVED ARE CERTAIN 1998 C EXTENDED CAB PICKUPS AND 4-DOOR UTILITIES BUILT AT ARLINGTON ASSEMBLY PLANT AND BUILT WITHIN THE FOLLOWING VIN BREAKPOINTS:

YEAR DIVISION MODEL PLANT CODE FROM THROUGH

1998 CHEVROLET C ARLINGTON "R" WR100002 WR130630 1998 GMC C ARLINGTON "R" WR500002 WR512688

IMPORTANT: DEALERS SHOULD CONFIRM VEHICLE ELIGIBILITY THROUGH VISS (VEHICLE INFORMATION SERVICE SYSTEM) OR SERVICENET (GMC ONLY) PRIOR TO BEGINNING CAMPAIGN REPAIRS. NOT ALL VEHICLES WITHIN THE ABOVE BREAKPOINTS MAY BE INVOLVED.

INVOLVED VEHICLES HAVE BEEN IDENTIFIED BY VEHICLE IDENTIFICATION NUMBER. COMPUTER LISTINGS CONTAINING THE COMPLETE VEHICLE IDENTIFICATION NUMBER, CUSTOMER NAME AND ADDRESS DATA HAVE BEEN PREPARED, AND ARE BEING FURNISHED TO INVOLVED DEALERS WITH THE CAMPAIGN BULLETIN. THE CUSTOMER NAME AND ADDRESS DATA FURNISHED WILL ENABLE DEALERS TO FOLLOW-UP WITH CUSTOMERS INVOLVED IN THIS CAMPAIGN. ANY DEALER NOT RECEIVING A COMPUTER LISTING WITH THE CAMPAIGN BULLETIN HAS NO INVOLVED VEHICLES CURRENTLY ASSIGNED.

THESE DEALER LISTINGS MAY CONTAIN CUSTOMER 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 THE FOLLOW-UP NECESSARY TO COMPLETE THIS CAMPAIGN.

PARTS INFORMATION

PARTS REQUIRED TO COMPLETE THIS CAMPAIGN ARE TO BE OBTAINED FROM GENERAL MOTORS SERVICE PARTS OPERATIONS (GMSPO). PLEASE REFER TO YOUR "INVOLVED VEHICLES LISTING" PRIOR TO ORDERING REQUIREMENTS. NORMAL ORDERS SHOULD BE PLACED ON A DRO = DAILY REPLENISHMENT ORDER. AN EMERGENCY REQUIREMENT SHOULD BE ORDERED ON A CSO = CUSTOMER SPECIAL ORDER.

PART NUMBER DESCRIPTION QUANTITY/ VEHICLE

15711834 BRAKE CLIP 2 (IF REQ'D)

15697891 BRAKE PIPE 1 (IF REQ'D)

12377967 DELCO SUPREME II BRAKE FLUID 1 PINT (IF REQ'D)

CUSTOMER NOTIFICATION

CUSTOMERS WILL BE NOTIFIED OF THIS CAMPAIGN ON THEIR VEHICLES BY GENERAL MOTORS (SEE COPY OF TYPICAL CUSTOMER LETTER INCLUDED WITH THIS BULLETIN - ACTUAL DIVISIONAL LETTER MAY VARY SLIGHTLY).

DEALER CAMPAIGN RESPONSIBILITY

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

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

CUSTOMERS WHO HAVE RECENTLY PURCHASED VEHICLES SOLD FROM YOUR VEHICLE INVENTORY, AND FOR WHICH THERE IS NO CUSTOMER INFORMATION INDICATED ON THE DEALER LISTING, ARE TO BE CONTACTED BY THE DEALER. ARRANGEMENTS ARE TO BE MADE TO MAKE THE REQUIRED CORRECTION ACCORDING TO THE INSTRUCTIONS CONTAINED IN THIS BULLETIN. THIS COULD BE DONE BY MAILING TO SUCH CUSTOMERS A COPY OF THE APPROPRIATE DIVISIONAL CUSTOMER LETTER ACCOMPANYING THIS BULLETIN. CAMPAIGN FOLLOW-UP CARDS SHOULD NOT BE USED FOR THIS PURPOSE, SINCE THE CUSTOMER MAY NOT AS YET HAVE RECEIVED THE NOTIFICATION LETTER.

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.

SERVICE PROCEDURE

1. RAISE THE HOOD OF THE VEHICLE

2. LOCATE THE REAR BRAKE PIPE LEADING FROM THE ABS MODULE TO THE REAR BRAKES (FIGURE 1, ITEM 1). THE PIPE IS LOCATED IN THE LOWER FRONT CORNER OF THE ENGINE COMPARTMENT ON THE DRIVER'S SIDE OF THE VEHICLE.

3. CHECK THE REAR BRAKE PIPE TO WHEELHOUSE INNER PANEL POSITIONING TO ENSURE A MINIMUM CLEARANCE OF 15 MM (19/32 INCH) EXISTS BETWEEN THE PIPE AND THE PANEL. INSPECT THE PIPE FOR ANY INDICATIONS OF CONTACT WITH THE WHEELHOUSE INNER PANEL.

- IF 15 MM (19/32 INCH) OF CLEARANCE EXISTS, MAKE SURE THE PIPE CLIP IS POSITIONED DOWNWARD TO THE BEND IN THE PIPE (FIGURE 1, ITEM 2). NO FURTHER ACTION IS REQUIRED. INSTALL THE GM CAMPAIGN IDENTIFICATION LABEL.

- IF THE CLEARANCE IS LESS THAN 15 MM AND THERE IS NO INDICATION OF PIPE TO PANEL CONTACT, PROCEED TO INSUFFICIENT CLEARANCE AND NO PIPE TO PANEL CONTACT PROCEDURE.

- IF THE CLEARANCE IS LESS THAN 15 MM AND THERE IS PIPE TO PANEL CONTACT, PROCEED TO INSUFFICIENT CLEARANCE AND PIPE TO PANEL CONTACT PROCEDURE.

INSUFFICIENT CLEARANCE AND NO PIPE TO PANEL CONTACT PROCEDURE

1. DISPLACE THE REAR BRAKE PIPE INBOARD (TOWARD ENGINE) TO CREATE A 15 MM (19/32 INCH) CLEARANCE AS SHOWN IN FIGURE 1.

2. SLIDE THE BRAKE PIPE CLIP DOWNWARD TO THE BEND IN THE BRAKE PIPE (FIGURE 1, ITEM 2).

3. INSTALL THE GM CAMPAIGN IDENTIFICATION LABEL.

INSUFFICIENT CLEARANCE AND PIPE TO PANEL CONTACT PROCEDURE

1. WORKING THROUGH THE LEFT FRONT WHEELHOUSE OPENING AND UTILIZING A BACK-UP WRENCH, DISCONNECT THE REAR BRAKE PIPE AT THE FRONT FITTING OF THE UNION.

2. DISCONNECT THE REAR BRAKE PIPE FITTING AT THE ABS MODULE.

3. REMOVE THE PIPE FROM THE TWO PIPE CLIPS AND DISCARD THE PIPE. RETAIN THE PIPE CLIPS FOR REINSTALLATION.

4. POSITION THE NEW PIPE ASSEMBLY INTO THE PIPE CLIPS.

5. HAND START THE PIPE FITTINGS AND TORQUE TO 24 NM (18 FT. LBS.).

6. DISPLACE THE REAR BRAKE PIPE INBOARD (TOWARD ENGINE), IF NECESSARY, TO CREATE A 15 MM (19/32 INCH) CLEARANCE AS SHOWN IN FIGURE 1.

7. SLIDE THE BRAKE PIPE CLIP DOWNWARD TO THE BEND IN THE BRAKE PIPE (FIGURE 1, ITEM 2).

8. BLEED THE BRAKE SYSTEM. REFER TO HYDRAULIC BRAKE BLEEDING IN THE SERVICE MANUAL.

9. INSTALL THE GM CAMPAIGN IDENTIFICATION LABEL.

FIGURE 1

LEGEND

1. REAR BRAKE PIPE

2. BRAKE PIPE CLIP

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 THE FIVE (5) DIGIT DEALER CODE OF THE DEALER PERFORMING THE CAMPAIGN SERVICE. THIS INFORMATION MAY BE INSERTED WITH A TYPEWRITER OR A 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 BY THE CUSTOMER FOR PERIODIC SERVICING. WHEN INSTALLING THE CAMPAIGN IDENTIFICATION LABEL, BE SURE TO PULL THE TAB TO ALLOW ADHESION OF THE CLEAR PROTECTIVE COVERING. ADDITIONAL CAMPAIGN IDENTIFICATION LABELS CAN BE OBTAINED FROM VISPAC INCORPORATED BY CALLING 1-800-269-5100 (MONDAY-FRIDAY, 8:00 A.M. TO 4:30 P.M. EST). ASK FOR ITEM NUMBER S-1015 WHEN ORDERING.

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

CLAIM INFORMATION

SUBMIT A PRODUCT CAMPAIGN CLAIM WITH THE INFORMATION INDICATED BELOW:

PART FAILED PARTS LABOR LABOR NET REPAIR PERFORMED COUNT PART NO. ALLOW CC-FC OP * HOURS ITEM

INSPECTION AND RELOCATE CLIP N/A --- N/A MA-96 V0246 0.2

INSPECTION AND BRAKE PIPE REPLACEMENT 1-3 --- ** MA-96 V0247 0.6

* FOR CAMPAIGN ADMINISTRATIVE ALLOWANCE, ADD 0.1 HOURS TO THE "LABOR HOURS".

** THE "PARTS ALLOWANCE" SHOULD BE THE SUM TOTAL OF THE CURRENT GMSPO DEALER NET PRICE PLUS 40% FOR THE BRAKE PIPE AND BRAKE CLIPS (AS REQUIRED) NEEDED TO COMPLETE THE REPAIR.

REFER TO THE GENERAL MOTORS CORPORATION CLAIMS PROCESSING MANUAL FOR DETAILS ON PRODUCT CAMPAIGN CLAIM SUBMISSION.

FIGURES: 1

Object Number: 484747 Size: FS

GM BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THESE 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 TOOLS, EQUIPMENT, 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 YOUR DEALER/RETAILER FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

98049

(SAMPLE OF NOTIFICATION USED)

OCTOBER, 1998

DEAR CHEVROLET/GMC CUSTOMER:

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

REASON FOR THIS RECALL: GENERAL MOTORS HAS DECIDED THAT A DEFECT WHICH RELATES TO MOTOR VEHICLE SAFETY EXISTS IN CERTAIN 1998 CHEVROLET AND GMC C EXTENDED CAB PICKUPS AND 4-DOOR UTILITIES. THESE VEHICLES MAY EXHIBIT A CONDITION IN WHICH THE REAR BRAKE FRONT PIPE MAY CONTACT THE LEFT FRONT FENDER WHEELHOUSE INNER PANEL JUST ABOVE THE CHASSIS FRAME.

WITH THE BRAKE PIPE CONTACTING THE WHEELHOUSE INNER PANEL, A HOLE COULD BE WORN IN THE BRAKE PIPE DURING THE NORMAL LIFE OF THE VEHICLE. A SLOW LOSS OF BRAKE FLUID WOULD LIKELY OCCUR AT FIRST AND WOULD LIKELY BE NOTICED BY THE OPERATOR AS FLUID SPOTTING UNDER THE VEHICLE WHILE PARKED. IF ENOUGH FLUID WERE LOST, IT WOULD LIKELY BE NOTICED AS ADDITIONAL BRAKE PEDAL TRAVEL.

IF THE BRAKE PIPE WORE VERY THIN, FOLLOWED BY A PANIC BRAKE APPLICATION THAT DEVELOPED ENOUGH PRESSURE TO RUPTURE THE BRAKE PIPE, THE RED BRAKE WARNING LIGHT IN THE INSTRUMENT CLUSTER WOULD ILLUMINATE, AND REAR BRAKE EFFECTIVENESS COULD BE REDUCED. THIS REDUCED REAR BRAKING EFFECTIVENESS COULD CAUSE INCREASED STOPPING DISTANCES. IF THIS OCCURRED AT A TIME WHEN MINIMUM STOPPING DISTANCE WAS REQUIRED, A VEHICLE CRASH WITHOUT PRIOR WARNING COULD OCCUR.

WHAT WILL BE DONE: TO PREVENT THE POSSIBILITY OF THIS CONDITION OCCURRING, YOUR CHEVROLET/GMC DEALER WILL RELOCATE THE BRAKE PIPE POSITIONING CLIP, INSPECT THE BRAKE PIPE FOR WEAR, AND IF NECESSARY, REPLACE THE BRAKE PIPE. THIS SERVICE WILL BE PERFORMED FOR YOU AT NO CHARGE.

HOW LONG WILL THE REPAIR TAKE? THE LENGTH OF TIME REQUIRED TO PERFORM THE INSPECTION AND RELOCATE THE BRAKE PIPE POSITIONING CLIP IS APPROXIMATELY 15 MINUTES. IF IT IS NECESSARY TO REPLACE THE BRAKE PIPE, ANOTHER 25 MINUTES WILL BE REQUIRED. ADDITIONAL TIME MAY BE REQUIRED TO SCHEDULE AND PROCESS YOUR VEHICLE. IF YOUR DEALER HAS A LARGE NUMBER OF VEHICLES AWAITING SERVICE, THIS ADDITIONAL TIME MAY BE SIGNIFICANT. PLEASE ASK YOUR DEALER IF YOU WISH TO KNOW HOW MUCH ADDITIONAL TIME WILL BE NEEDED.

CONTACTING YOUR DEALER: PLEASE CONTACT YOUR CHEVROLET/GMC DEALER AS SOON AS POSSIBLE TO ARRANGE A SERVICE DATE. PARTS ARE AVAILABLE AND INSTRUCTIONS FOR MAKING THIS CORRECTION HAVE BEEN SENT TO YOUR DEALER. PLEASE ASK YOUR DEALER IF YOU WISH TO KNOW HOW MUCH TIME WILL BE NEEDED TO SCHEDULE, PROCESS AND REPAIR YOUR VEHICLE. YOUR CHEVROLET/GMC DEALER IS BEST EQUIPPED TO OBTAIN PARTS AND PROVIDE SERVICES TO CORRECT YOUR VEHICLE AS PROMPTLY AS POSSIBLE. SHOULD YOUR DEALER BE UNABLE TO SCHEDULE A SERVICE DATE WITHIN A REASONABLE TIME, YOU SHOULD CONTACT THE APPROPRIATE CUSTOMER ASSISTANCE CENTER AT THE LISTED NUMBER BELOW:

DIVISION

NUMBER DEAF, HEARING IMPAIRED OR SPEECH IMPAIRED *

CHEVROLET 1-800-222-1020 1-800-833-2438

GMC 1-800-462-8782 1-800-462-8583

* UTILIZES TELECOMMUNICATION DEVICES FOR THE DEAF/TEXT TELEPHONES (TDD/TTY)

IF, AFTER CONTACTING THE APPROPRIATE CUSTOMER ASSISTANCE CENTER, YOU ARE STILL NOT SATISFIED THAT WE HAVE DONE OUR BEST TO REMEDY THIS CONDITION WITHOUT CHARGE AND WITHIN A REASONABLE TIME, YOU MAY WISH TO WRITE THE ADMINISTRATOR, NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, 400 SEVENTH STREET SW, WASHINGTON, DC 20590 OR CALL 1-800-424-9393 (WASHINGTON, DC RESIDENTS USE 202-366-0123).

CUSTOMER REPLY CARD: THE ENCLOSED CUSTOMER REPLY CARD IDENTIFIES YOUR VEHICLE. PRESENTATION OF THIS CARD TO YOUR DEALER WILL ASSIST IN MAKING THE NECESSARY CORRECTION IN THE SHORTEST POSSIBLE TIME. IF YOU NO LONGER OWN THIS VEHICLE, PLEASE LET US KNOW BY COMPLETING THE POSTAGE PAID REPLY CARD AND RETURNING IT 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 PRODUCTS.

CHEVROLET/PONTIAC-GMC DIVISION GENERAL MOTORS CORPORATION

ENCLOSURE

********************************************************************** GM OF CANADA VERSION **********************************************************************

PRODUCT CAMPAIGNS 98049 OCTOBER 1998

SUBJECT: CAMPAIGN 98049 REAR BRAKE PIPE MAY CONTACT THE LEFT FRONT FENDER WHEELHOUSE INNER PANEL

MODELS: 1998 CHEVROLET AND GMC 'C' EXTENDED CAB PICKUPS AND 4-DOOR UTILITIES (BUILT AT ARLINGTON ASSEMBLY PLANT)

DEFECT INVOLVED

GENERAL MOTORS HAS DECIDED THAT A DEFECT WHICH RELATES TO MOTOR VEHICLE SAFETY EXISTS IN CERTAIN 1998 'C' EXTENDED CAB PICKUPS AND 4-DOOR UTILITIES BUILT AT THE ARLINGTON ASSEMBLY PLANT. THESE VEHICLES MAY EXHIBIT A CONDITION IN WHICH THE REAR BRAKE FRONT PIPE MAY CONTACT THE LEFT FRONT FENDER WHEELHOUSE INNER PANEL JUST ABOVE THE CHASSIS FRAME.

TO PREVENT THE POSSIBILITY OF THIS CONDITION OCCURRING, DEALERS ARE TO RELOCATE THE BRAKE PIPE POSITIONING CLIP, INSPECT THE BRAKE PIPE FOR WEAR, AND IF NECESSARY, REPLACE THE BRAKE PIPE.

VEHICLES INVOLVED

INVOLVED ARE CERTAIN 1998 'C' EXTENDED CAB PICKUPS AND 4-DOOR UTILITIES BUILT AT ARLINGTON ASSEMBLY PLANT AND BUILT WITHIN THE FOLLOWING VIN BREAKPOINTS:

YEAR DIVISION MODEL PLANT CODE FROM THROUGH

1998 CHEVROLET C ARLINGTON "R" WR100002 WR130630 1998 GMC C ARLINGTON "R" WR500002 WR512688

NOTE: PLEASE CHECK DCS SCREEN 445 OR YOUR V.I.N. LISTING BEFORE PERFORMING CAMPAIGN TO ENSURE THAT THE VEHICLE IS AFFECTED. ONLY AFFECTED VIN'S WILL BE PAID.

PARTS INFORMATION

PARTS REQUIRED TO COMPLETE THIS CAMPAIGN ARE TO BE OBTAINED FROM GENERAL MOTORS SERVICE PARTS OPERATIONS (GMSPO). PLEASE REFER TO YOUR "INVOLVED VEHICLES LISTING" PRIOR TO ORDERING REQUIREMENTS.

PART NUMBER DESCRIPTION QUANTITY/VEHICLE

15697891 BRAKE CLIP 2 (IF REQUIRED)

15711834 BRAKE PIPE 1 (IF REQUIRED)

12377967 DELCO SUPREME II BRAKE FLUID 0.473 LITRE (1 PINT) (IF REQUIRED)

CUSTOMER NOTIFICATION

REGISTERED LETTERS WILL BE SENT TO KNOWN OWNERS OF RECORD LOCATED WITHIN AREAS COVERED BY THE U.S. NATIONAL TRAFFIC AND MOTOR VEHICLE SAFETY ACT, AS AMENDED. FOR OWNERS OUTSIDE THESE AREAS, THE ATTACHED SUGGESTED DEALER LETTER IS RECOMMENDED AND SHOULD BE SENT BY DEALERS.

DEALER CAMPAIGN RESPONSIBILITY

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

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

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

SERVICE PROCEDURE

1. RAISE THE HOOD OF THE VEHICLE

- IF THE CLEARANCE IS LESS THAN 15 MM AND THERE IS NO INDICATION OF PIPE TO PANEL CONTACT, PROCEED TO INSUFFICIENT CLEARANCE AND NO PIPE TO PANEL CONTACT PROCEDURE.

- IF THE CLEARANCE IS LESS THAN 15 MM AND THERE IS PIPE TO PANEL CONTACT, PROCEED TO INSUFFICIENT CLEARANCE AND PIPE TO PANEL CONTACT PROCEDURE.

INSUFFICIENT CLEARANCE AND NO PIPE TO PANEL CONTACT PROCEDURE

1. DISPLACE THE REAR BRAKE PIPE INBOARD (TOWARD ENGINE) TO CREATE A 15 MM (19/32 INCH) CLEARANCE AS SHOWN IN FIGURE 1.

2. SLIDE THE BRAKE PIPE CLIP DOWNWARD TO THE BEND IN THE BRAKE PIPE (FIGURE 1, ITEM 2).

3. INSTALL CAMPAIGN IDENTIFICATION LABEL.

INSUFFICIENT CLEARANCE AND PIPE TO PANEL CONTACT PROCEDURE

1. WORKING THROUGH THE LEFT FRONT WHEELHOUSE OPENING AND UTILIZING A BACK-UP WRENCH, DISCONNECT THE REAR BRAKE PIPE AT THE FRONT FITTING OF THE UNION.

2. DISCONNECT THE REAR BRAKE PIPE FITTING AT THE ABS MODULE.

3. REMOVE THE PIPE FROM THE TWO PIPE CLIPS AND DISCARD THE PIPE. RETAIN THE PIPE CLIPS FOR REINSTALLATION.

4. POSITION THE NEW PIPE ASSEMBLY INTO THE PIPE CLIPS.

5. HAND START THE PIPE FITTINGS AND TORQUE TO 24 N M (18 FT. LBS.).

6. DISPLACE THE REAR BRAKE PIPE INBOARD (TOWARD ENGINE), IF NECESSARY, TO CREATE A 15 MM (19/32 INCH) CLEARANCE AS SHOWN IN FIGURE 1.

7. SLIDE THE BRAKE PIPE CLIP DOWNWARD TO THE BEND IN THE BRAKE PIPE (FIGURE 1, ITEM 2).

8. BLEED THE BRAKE SYSTEM. REFER TO HYDRAULIC BRAKE BLEEDING IN THE SERVICE MANUAL.

9. INSTALL CAMPAIGN IDENTIFICATION LABEL.

SERVICE PROCEDURE

FIGURE 1

LEGEND

1. REAR BRAKE PIPE

2. BRAKE PIPE CLIP

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

INSERT DEALER CODE

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

CLAIM INFORMATION

SUBMIT A PRODUCT CAMPAIGN CLAIM WITH THE INFORMATION INDICATED BELOW:

PART FAILED PARTS LABOR LABOR NET REPAIR PERFORMED COUNT PART NO. ALLOW CC-FC OP * HOURS ITEM

INSPECTION AND RELOCATE CLIP --- --- --- MA-96 V0246 0.2

INSPECTION AND BRAKE PIPE REPLACEMENT 1-3 --- ** MA-96 V0247 0.6

* FOR CAMPAIGN ADMINISTRATIVE ALLOWANCE, ADD 0.1 HOURS TO THE "LABOUR HOURS".

** THE "PARTS ALLOWANCE" SHOULD BE THE SUM TOTAL OF THE CURRENT GMSPO DEALER NET PRICE PLUS LANDED COST MARK-UP FOR THE BRAKE PIPE AND BRAKE CLIPS (AS REQUIRED) NEEDED TO COMPLETE THE REPAIR.

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

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION