CAMPAIGN: TRANS. OIL COOLER LINE THERMISTOR

88-C-4

SUBJECT: 1988 ELDORADO AND SEVILLE MODELS: TRANSMISSION OIL COOLER LINE THERMISTOR

CADILLAC MOTOR CAR DIVISION HAS DETERMINED THAT CERTAIN 1988 ELDORADO AND SEVILLE MODELS MAY HAVE AN IMPROPERLY ASSEMBLED THERMISTOR (TEMPERATURE SENSOR) IN THE TRANSMISSION OIL COOLER LINE WHICH MAY RESTRICT OIL FLOW. THIS CONDITION COULD RESULT IN THE TRANSMISSION OVERHEATING CAUSING IT TO FAIL.

TO PREVENT THIS CONDITION FROM OCCURRING, DEALERS WILL BE REQUIRED TO INSPECT THE THERMISTOR AND, IF NECESSARY, ADD AN ADAPTER/SPACER TO THE THERMISTOR FITTING TO ELIMINATE THIS POSSIBLE RESTRICTION IN THE COOLER LINE ON ALL AFFECTED VEHICLES PER THE VEHICLES INVOLVED AND SERVICE PROCEDURES SECTIONS OF THIS BULLETIN.

VEHICLES INVOLVED

ALL 1988 ELDORADO AND SEVILLE MODELS WITHIN THE FOLLOWING VIN RANGES REQUIRE THIS CAMPAIGN (CADILLAC RECORDS INDICATE THAT A TOTAL OF 14,312 VEHICLES ARE AFFECTED):

ELDORADO - JU609471 THROUGH JU618072 SEVILLE - JU808227 THROUGH JU813936

OWNER NOTIFICATION

OWNERS OF VEHICLES AFFECTED BY THIS CAMPAIGN WILL BE NOTIFIED BY LETTER FROM CADILLAC MOTOR CAR DIVISION.

DEALER LIST

A LIST OF VEHICLES INVOLVED, WHICH OUR RECORDS INDICATE WERE SOLD BY OR SHIPPED TO YOU, IS ENCLOSED FOR YOUR FOLLOW-UP. THIS LISTING CONTAINS OWNER NAMES AND ADDRESSES OBTAINED FROM CADILLAC DELIVERY RECORDS. YOU ARE URGED TO LIMIT THE USE OF THIS LIST TO THE FOLLOW-UP NECESSARY TO COMPLETE THIS CAMPAIGN. IF NO LIST IS ENCLOSED, NONE OF THE SUSPECT VEHICLES ARE KNOWN TO BE IN YOUR AREA.

WE SUGGEST YOU USE THE LIST OF VEHICLES INVOLVED TO ORDER YOUR INITIAL PARTS REQUIREMENTS AS SOON AS POSSIBLE.

DEALER CAMPAIGN RESPONSIBILITY

DEALERS ARE TO SERVICE ALL VEHICLES INVOLVED IN THIS CAMPAIGN, AT NO CHARGE TO OWNERS, REGARDLESS OF MILEAGE, AGE OF VEHICLE, OR OWNERSHIP.

WHENEVER A VEHICLE SUBJECT TO THIS CAMPAIGN IS TAKEN INTO USED CAR INVENTORY, DEALERS ARE TO TAKE THE STEPS NECESSARY TO BE SURE THE CAMPAIGN CORRECTION HAS BEEN MADE BEFORE RESELLING THE VEHICLE.

IN ADDITION, DEALERS ARE TO PERFORM THE CAMPAIGN ON ALL AFFECTED VEHICLES AS THEY ARE BROUGHT IN FOR ANY KIND OF SERVICE.

PARTS INFORMATION

THE PARTS REQUIRED TO COMPLETE THIS CAMPAIGN SHOULD BE OBTAINED FROM THE PARTS DISTRIBUTION CENTERS OF GENERAL MOTORS SERVICE PARTS OPERATIONS (GMSPO). A DESCRIPTION IS PROVIDED BELOW:

QUANTITY REQUIRED DESCRIPTION PART NUMBER PER VEHICLE

BRASS ADAPTER/SPACER 444002 1

IF THERE IS DIFFICULTY OBTAINING THESE PARTS USING NORMAL ORDERING PROCEDURES, DEALERS MAY PLACE A C.I.O. USING ADVISE CODE "2" WITH NO SPECIAL INSTRUCTION CODE. THE PARTS MAY ALSO BE ORDERED ON A V.I.P. ORDER; HOWEVER, UNLESS PRIOR ZONE APPROVAL IS OBTAINED, DEALERS WILL BE REQUIRED TO ABSORB ANY SURCHARGE INVOLVED UNDER THE V.I.P. SYSTEM.

IF ANY PROBLEMS ARE ENCOUNTERED IN OBTAINING THESE PARTS, PLEASE FOLLOW THE THREE-STEP PROCEDURE AS OUTLINED IN THE GM PARTS POLICY & PROCEDURE MANUAL, SECTION IV, PAGES 34 AND 35, AUGUST 1986 EDITION.

SERVICE PROCEDURE

NOTICE: THE TRANSMISSION OIL COOLER LINE THERMISTOR IS LOCATED ON THE TRANSAXLE COOLER OUTLET LINE NEAR THE TRANSAXLE AT THE LEFT FRONT CORNER OF THE VEHICLE (JUST REARWARD OF THE FRAME CROSSMEMBER). IT CAN BE INSPECTED FROM ABOVE WITH THE HOOD OPEN AND IS EASILY ACCESSIBLE FOR SERVICE AFTER RAISING THE VEHICLE. (REFER TO ILLUSTRATION #1).

1. INSPECT THE TRANSAXLE LINE TEMPERATURE THERMISTOR BELOW ELECTRICAL CONNECTOR TO DETERMINE IF IT IS MADE OF BRASS OR STEEL. IF THE SENSOR IS BRASS PROCEED TO STEP 2. IF THE SENSOR IS MADE OF STEEL, NO FURTHER SERVICE IS NEEDED; PROCEED TO STEP 4.

2. REMO5E THE BRASS TEMPERATURE THERMISTOR FROM THE COOLER LINE THERMISTOR FITTING.

3. INSTALL THE BRASS ADAPTER/SPACER (PART NUMBER 444002) INTO THE THERMISTOR FITTING AND INSTALL THE THERMISTOR INTO THE ADAPTER/SPACER. (REFER TO ILLUSTRATION #2) USE A LIGHT APPLICATION OF THREAD SEALANT IF NEEDED TO PREVENT LEAKS. DO NOT OVERTIGHTEN.

4. INSTALL CAMPAIGN COMPLETION LABEL.

CAMPAIGN COMPLETION LABEL

UPON COMPLETION OF THIS CAMPAIGN, A WHITE CAMPAIGN LABEL (CAT. NO. S-1015) SHOULD BE AFFIXED ON A CLEAN, DRY SURFACE OF THE RADIATOR SUPPORT TIE BAR IN AN AREA CLEARLY VISIBLE WHEN THE HOOD IS RAISED. EACH LABEL PROVIDES SPACE TO PRINT IN INK (OR TYPE) CAMPAIGN NUMBER 88-C-4 AND YOUR FIVE-DIGIT CADILLAC DEALER CODE. DEALERS ARE TO TAKE THE STEPS NECESSARY TO ENSURE THAT THE NUMBERS ARE PROPERLY RECORDED ON THE LABEL.

CREDIT

CREDIT FOR THIS CAMPAIGN WILL BE ISSUED UPON RECEIPT OF A PROPERLY PREPARED WARRANTY CLAIM AS FOLLOWS:

FAILED PARTS FAILURE LABOR LABOR* DESCRIPTION PART NO. ALLOWANCE CODE OPERATION HOURS

INSPECT THERMISTOR ONLY ------ ** 96 V4740 .2 HOURS

INSPECT THERMISTOR AND INSTALL ADAPTER/ SPACER 444002 ** 96 V4741 .3 HOURS

* THIS LABOR TIME REPRESENTS THE ACTUAL TIME REQUIRED TO PERFORM THE CORRECTION. DEALERS SHOULD APPLY FOR 0.1 ADDITIONAL HOUR FOR ADMINISTRATIVE ALLOWANCE AS "OTHER LAB OR HOURS".

** PARTS ALLOWANCE SHOULD BE TOTAL OF THE CURRENT GMWDD NET PLUS 30% OF ALL PARTS REQUIRED FOR THE REPAIR. THERMISTOR

THERMISTOR

THERMISTOR FITTING

THERMISTOR FITTING

BRASS ADAPTER/SPACER

.

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.