CAMPAIGN: FRT. AXLE BRAKE MTS. BRACKETS MAY BREAK. GMC Truck GMC MD FWD Control Chassis 1985

NUMBER: 87-C-08 GROUP: 5-BRAKES

DATE: AUGUST, 1987

SUBJECT: FRONT AXLE BRAKE CHAMBER MOUNTING BRACKETS MAY BREAK

MODELS: 1983-1987 MEDIUM DUTY P6, C6 + C7 EQUIPPED WITH 7,000 LB AIR BRAKE FRONT AXLE (RPO FS2 OR FT2) BUILT WITHOUT FRONT BRAKE LIMITING VALVE (RPO J82)

1983-1987 SCHOOL BUS B6P042 EQUIPPED WITH 7,500 LB AIR BRAKE FRONT AXLE (RPO FRD) BUILT WITHOUT FRONT BRAKE LIMITING VALVE (RPO J82)

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 ZONE/BRANCH 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 SOME 1983-1987 B6P042 MODEL SCHOOL BUSES EQUIPPED WITH A 7,500 LB FRONT AXLE (RPO FRD) AND MEDIUM DUTY MODEL TRUCKS EQUIPPED WITH A 7,000 LB FRONT AXLE (RPO FS2 OR FT2). ONLY VEHICLES ORIGINALLY BUILT WITHOUT A FRONT BRAKE LIMITING VALVE (RPO J82) ARE INVOLVED. SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S-CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION. IF THIS CONDITION IS NOT CORRECTED, THE CRACK CAN GO ALL THE WAY THROUGH THE WELD, CAUSING THE BRACKET TO BREAK, RESULTING IN THE LOSS OF BRAKING ABILITY AT THAT FRONT WHEEL, AND POSSIBLY RESTRICTED STEERING, WHICH COULD LEAD TO A VEHICLE CRASH WITHOUT PRIOR WARNING.

TO PREVENT THIS CONDITION FROM OCCURRING IT WILL BE NECESSARY TO INSTALL NEW REINFORCED FRONT BRAKE CHAMBER MOUNTING BRACKETS ON ALL INVOLVED VEHICLES AND INSTALL A FRONT BRAKE LIMITING VALVE ON VEHICLES WITHOUT ONE.

SCHOOL BUSES WHICH HAVE BEEN CAMPAIGNED PREVIOUSLY (GMC TRUCK CAMPAIGN 86-C-05/CHEVROLET CAMPAIGN 86-C-09), AND HAVE HAD A FRONT BRAKE LIMITING VALVE INSTALLED, DO NOT NEED A NEW LIMITING VALVE INSTALLED IN THIS CAMPAIGN. THE FRONT BRAKE CHAMBER BRACKETS (ORIGINAL OR REPLACEMENT) MUST BE REPLACED WITH THE REVISED BRACKET ON ALL SCHOOL BUSES.

BRAKE CHAMBER BRACKETS FOR SCHOOL BUSES WHICH HAVE BEEN CAMPAIGN PREVIOUSLY (86-C-05/86-C-09) HAVE BEEN SHIPPED BY GMSPO TO DEALERS WHO PERFORMED THE CAMPAIGN.

VEHICLES INVOLVED

INVOLVED ARE CERTAIN 1983-1987 GM MEDIUM DUTY MODEL TRUCKS AND 1983-1986 GM SCHOOL BUSES BUILT WITHIN THE FOLLOWING VIN BREAKPOINTS:

ASSEMBLY MODEL PLANT YEAR FROM THROUGH

GMC TRUCK PONTIAC 1983 DV501770 DV534772 1984 EV500844 EV554094 1985 FV501543 FV632202 1986 GV500355 GV542367 1987 HV500410 HV535079

CHEVROLET PONTIAC 1983 DV100523 DV135030 1984 EV100553 EV144337 1985 FV100737 FV219007 1986 GV100052 GV122206 1987 HV100023 HV113163

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.

DEALER CAMPAIGN RESPONSIBILITY

DEALERS ARE TO PERFORM THE REQUIRED SERVICE DESCRIBED UNDER SERVICE PROCEDURE FOR ALL VEHICLES SUBJECT TO THIS CAMPAIGN AT NO CHARGE TO OWNERS, REGARDLESS OF MILEAGE, AGE OF VEHICLE, OR OWNERSHIP, FROM THIS TIME FORWARD.

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 ENSURE THE CAMPAIGN CORRECTION HAS BEEN MADE BEFORE RESELLING OR RELEASING THE VEHICLE.

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

IF NO OWNER'S NAME AND ADDRESS WERE AVAILABLE TO GMC TRUCK DIVISION AT THE TIME OF CAMPAIGN INITIATION, THE DEALER WILL 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.

GMC TRUCK DIVISION GENERAL MOTORS CORPORATION 101 UNION STREET PLYMOUTH, MICHIGAN 48170

OWNER NOTIFICATION

OWNERS WILL BE NOTIFIED OF THIS CAMPAIGN ON THEIR VEHICLES BY GMC TRUCK 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.

SCHOOL BUS SERVICE CALL TIME ALLOWANCE

DUE TO THE IMPORTANCE AND RELEASE TIMING OF THIS CAMPAIGN, SCHOOL BUSES INVOLVED IN THIS RECALL MUST BE COMPLETED PRIOR TO THE START OF SCHOOL. GENERAL MOTORS HAS PRE-AUTHORIZED A SERVICE CALL TIME ALLOWANCE OF UP TO ONE HOUR (1.0) FOR ONE TRIP TO A CUSTOMERS LOCATION TO PERFORM REPAIRS ON ALL OF THE CUSTOMERS AFFECTED SCHOOL BUSES. THIS SERVICE CALL TIME ALLOWANCE WILL BE FOR REPAIRS COMPLETED BY SEPTEMBER 15, 1987.

SERVICE INFORMATION

FOR REPAIR AND INSPECTION PROCEDURES, FOLLOW THE INSTRUCTION SHEETS CONTAINED IN THIS BULLETIN. SHEETS 1 THROUGH 4 DETAIL THE PARTS INVOLVED AND SHEETS 5 THROUGH 10 INCLUDE THE ACTUAL SERVICE PROCEDURE.

PARTS INFORMATION

PARTS ARE NOT AVAILABLE FOR 100% OF THE INVOLVED SCHOOL BUSES. THEREFORE, THEY WILL BE DISTRIBUTED BY REGION, STARTING WITH THE EASTERN REGION AND PROGRESS TOWARD THE WESTERN REGION.

OWNERS OF INVOLVED MEDIUM DUTY TRUCKS WILL BE NOTIFIED PARTS WILL BE AVAILABLE APPROXIMATELY SEPTEMBER 15, 1987.

VEHICLES WHICH HAVE NOT HAD CAMPAIGN 86-C-05/86-C-09 COMPLETED PREVIOUSLY, WILL NOT HAVE PARTS FORCE SHIPPED, AND IN THOSE CASES 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 ON AN ADVISE CODE (2).

DEALERS WHO PERFORMED CAMPAIGN 86-C-05/86-C-09 WILL RECEIVE BRACKETS FOR THIS CAMPAIGN WITHOUT ORDERING FROM GMSPO. DEALERS WILL BE INVOICED FOR THESE PARTS. DEALERS SHOULD ORDER SCHOOL BUS BRACKETS IF CIRCUMSTANCES REQUIRE.

PART NUMBER DESCRIPTION QUANTITY

15559835 LIMITING VALVE INSTALLATION KIT 1

VEHICLES WITH MANUAL SLACK ADJUSTERS 15608879 LEFT BRAKE CHAMBER BRACKET 1 15608880 RIGHT BRAKE CHAMBER BRACKET 1

VEHICLES WITH AUTOMATIC SLACK ADJUSTERS 15608881 LEFT BRAKE CHAMBER BRACKET 1 15608882 RIGHT BRAKE CHAMBER BRACKET 1

(LIMITING VALVE KIT NOT REQUIRED FOR SCHOOL BUSES THAT HAVE HAD THE LIMITING VALVE REPLACED UNDER CAMPAIGN 86-C-05/86-C-09).

NOTE: SEE SHEET 7 (2 DIFFERENT PLUMBING DESIGNS)

VEHICLES WHICH HAVE BEEN BUILT WITH NYLON HOSES INSTEAD OF COPPER TUBING, AND REQUIRE NYLON TUBING CONNECTING THE APPLICATION VALVE TO THE QUICK RELEASE VALVE REQUIRE THE FOLLOWING PARTS:

PART NET QUANTITY NUMBER DESCRIPTION AMOUNT* PER VEHICLE

NPN STRAIGHT CONNECTOR 1 PROC.LOC. APPLICATION VALVE - 1/2" NYLON TUBE TO 3/8 PIPE THREAD-SLEEVE AND NUT ONE END, 3/8 EXT. THD OTHER END (WEATHERHEAD #1468X8)

NPN 90 DEGREE ELBOW-LIMITING VALVE 1 PROC.LOC. - 1/2" NYLON TUBE TO 3/8 PIPE THD. SLEEVE AND NUT ONE END, 3/8 EXT. THD OTHER END (WEATHERHEAD #1469X8)

NPN 1/2" NYLON TUBE - $8.27 61" AVAILABLE IN 50' ROLL, P/N 8885606

*THIS AMOUNT IS TO BE ENTERED IN THE NET ITEM COLUMN ON WARRANTY CLAIM TO COVER CONNECTORS AND TUBE.

WARRANTY INFORMATION

DEALERS SHOULD SUBMIT A WARRANTY CLAIM ON EACH VEHICLE COMPLETED UNDER THIS CAMPAIGN.

LABOR OPERATION *TIME TROUBLE NUMBER DESCRIPTION ALLOWANCE CODE

V4120 REPLACE BOTH BRAKE CHAMBER 2.1 HRS 96 BRACKETS

V4121 REPLACE BOTH BRAKE CHAMBER 3.2 HRS 96 BRACKETS + LIMITING VALVE

*ADD 0.1 HOUR FOR ADMINISTRATIVE 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 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 "GMC TRUCK CLAIMS PROCESSING MANUAL" #P 8719.

DEAR GENERAL MOTORS BUS OWNER:

THIS NOTICE IS BEING 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 SOME 1983-1987 B6P042 MODEL SCHOOL BUSES EQUIPPED WITH A 7,500 LB FRONT AXLE (RPO FRD) ORIGINALLY BUILT WITHOUT A FRONT BRAKE LIMITING VALVE (RPO J82). SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S-CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION. IF THIS CONDITION IS NOT CORRECTED, THE CRACK CAN GO ALL THE WAY THROUGH THE WELD, CAUSING THE BRACKET TO BREAK, RESULTING IN THE LOSS OF BRAKING ABILITY AT THAT FRONT WHEEL, AND POSSIBLY RESTRICTED STEERING, WHICH COULD LEAD TO A VEHICLE CRASH WITHOUT PRIOR WARNING.

SCHOOL BUSES WHICH HAVE PREVIOUSLY BEEN CAMPAIGNED (GMC TRUCK CAMPAIGN 86-C-05/CHEVROLET 86-C-09) MUST HAVE FRONT BRAKE CHAMBER BRACKETS REPLACED WITH REVISED BRACKETS (WITH REINFORCEMENT) REGARDLESS OF WHETHER OR NOT BRACKETS WERE REPLACED AT THE TIME 86-C-05/86-C-09 WAS PERFORMED. LIMITING VALVES DO NOT NEED TO BE INSTALLED ON THESE BUSES IF INSTALLATION WAS COMPLETED ON 86-C-05/86-C-09.

BRAKE CHAMBER BRACKETS FOR SCHOOL BUSES HAVE BEEN SHIPPED BY GENERAL MOTORS TO YOUR DEALER. THE GMC TRUCK DEALER OR CHEVROLET DEALER WHO PERFORMED CAMPAIGN 86-C-05/86-C-09 ON YOUR SCHOOL BUS WILL HAVE YOUR BRACKETS. INSTRUCTIONS FOR PERFORMING THIS SERVICE HAVE ALSO BEEN SENT TO THIS DEALER. PLEASE CONTACT YOUR DEALER TO ARRANGE A SERVICE DATE. PARTS FOR VEHICLES NOT PREVIOUSLY CAMPAIGNED WILL BE AVAILABLE AUGUST 6, 1987. THE LABOR TIME TO MAKE CORRECTIONS TO YOUR VEHICLE WILL VARY BETWEEN 2 HOURS AND 3-1/2 HOURS. PLEASE ASK YOUR DEALER IF YOU WISH TO KNOW HOW MUCH ADDITIONAL TIME IS NEEDED TO PROCESS YOUR VEHICLE.

FOR EXPEDIENCY, SCHOOL BUS OPERATORS ARE REQUESTED TO MAKE THEIR VEHICLE(S) AVAILABLE TO THEIR LOCAL DEALER, OR MAKE ARRANGEMENTS WITH THEIR DEALER TO HAVE VEHICLE REPAIRS PERFORMED ON THE SCHOOL BUS OPERATOR'S PROPERTY IF PRACTICAL.

YOUR GM DEALER IS BEST EQUIPPED TO OBTAIN PARTS AND PROVIDE SERVICE TO ENSURE YOUR VEHICLE IS INSPECTED AND/OR 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 ZONE/BRANCH OFFICE BY TELEPHONE. THE ZONE/BRANCH OFFICE WILL ASSIST YOU AND YOUR DEALER IN GETTING YOUR VEHICLE SERVICED. THE TELEPHONE NUMBERS OF THE GMC TRUCK ZONE OFFICES ARE LISTED IN YOUR OWNER'S MANUAL. CHEVROLET BRANCH OFFICE LOCATIONS AND TELEPHONE NUMBERS HAVE BEEN ATTACHED FOR YOUR CONVENIENCE.

AFTER CONTACTING YOUR DEALER AND THE ZONE/BRANCH 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 426-0123).

THE ENCLOSED 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 LET US KNOW BY COMPLETING THE POSTAGE PAID OWNER 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.

GMC TRUCK DIVISION GENERAL MOTORS CORPORATION

87C08 ENCLOSURE

DEAR GENERAL MOTORS TRUCK OWNER:

THIS NOTICE IS BEING 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 SOME 1983-1987 MEDIUM DUTY MODEL TRUCKS EQUIPPED WITH A 7,000 LB FRONT AXLE (RPO FS2 OR FT2) ORIGINALLY BUILT WITHOUT A FRONT BRAKE LIMITING VALVE (RPO J82). SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S-CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION. IF THIS CONDITION IS NOT CORRECTED, THE CRACK CAN GO ALL THE WAY THROUGH THE WELD, CAUSING THE BRACKET TO BREAK, RESULTING IN THE LOSS OF BRAKING ABILITY AT THAT FRONT WHEEL, AND POSSIBLY RESTRICTED STEERING, WHICH COULD LEAD TO A VEHICLE CRASH WITHOUT PRIOR WARNING.

INSTRUCTIONS FOR PERFORMING THIS SERVICE HAVE BEEN SENT TO YOUR GM DEALER. PLEASE CONTACT YOUR DEALER TO ARRANGE A SERVICE DATE. PARTS WILL BE AVAILABLE APPROXIMATELY SEPTEMBER 15, 1987. THE LABOR TIME TO MAKE CORRECTIONS TO YOUR VEHICLE WILL VARY BETWEEN 2 HOURS AND 3-1/2 HOURS. PLEASE ASK YOUR DEALER IF YOU WISH TO KNOW HOW MUCH ADDITIONAL TIME IS NEEDED TO PROCESS YOUR VEHICLE.

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.

GMC TRUCK DIVISION GENERAL MOTORS CORPORATION

87C08 ENCLOSURE

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.