CAMPAIGN: TRANS. OIL COOLER LINE THERMISTOR

TRANSMISSION OIL COOLER LINE THERMISTOR 1988 Eldorado and Seville

TO: ALL AFFECTED DEALERS:

General Motors of Canada 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 allow proper clearance 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.

Eldorado - JU609471 through JU618072 Seville - JU808227 through JU813936

All affected vehicles have been identified by the VIN listing provided to involved Dealers with this bulletin. Any Dealer not receiving a listing was not shipped any of the affected vehicles.

DEALER CAMPAIGN RESPONSIBILITY:

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.

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 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 modification according to instructions contained in this bulletin.

CAMPAIGN PROCEDURE:

Refer to Section 4 of the Service Policies and Procedures Manual for the detailed procedure on handling Product Campaigns. Dealers are requested to complete the campaign on all transfers as soon as possible.

OWNER NOTIFICATION:

All owners of record at the time of campaign release are shown on the attached computer listing and have been notified by first class mail from General Motors. The listings provided are for campaign activity only and should not be used for any other purpose.

PARTS INFORMATION:

Parts should be ordered through regular channels, as follows:

Quantity Required Description Part Number Per Vehicle ----------- ----------- -----------------

Brass Pipe Adapter/Spacer 444002 1

PARTS AND LABOUR CLAIM INFORMATION:

Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card, RAPID terminal or DCS transmission in accordance with the following:

Repair Code Description Time Allowance ----------- ------------ --------------

1A Inspection Only .3

2A Inspect Thermistor and Install .4 Adapter/Spacer

Time allowance includes 0.1 hour for Dealer administrative detail associated with this campaign. Parts credit will be based on Dealer net plus 30% to cover parts handling.

SERVICE PROCEDURE:

NOTE : 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 and can be inspected from above with the hood open and is easily accessible after raising the vehicle. (Refer to Illustration #1.)

1. Inspect the transaxle line temperature thermistor 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. Remove the brass temperature thermistor from the cooler line thermistor fitting.

3. Install the brass pipe adapter/spacer (Part Number 444002) into the thermistor fitting and install the thermistor into the adapter/spacer. Refer to Illustration #2.) Use thread sealant if needed to prevent leaks. Do not overtighten.

INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL

Clean surface of radiator upper mounting panel and apply a Campaign Identification Label. Make sure the correct campaign number is inserted on the label. This will indicate that the campaign has been completed.

Dear General Motors Customer:

Records available to General Motors of Canada Limited indicate you are the owner of a 1988 Eldorado or Seville.

It has been determined that your vehicle 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 on your vehicle, please contact your GM Dealer to arrange for a service date to have this condition corrected. Your Dealer will inspect the thermistor and, if necessary, add a spacer to the thermistor housing to allow proper clearance in the cooler line on. This service will be performed at no charge to you.

Instructions for making this correction have been sent to your Dealer. The labour time to install the spacer is approximately twenty minutes. Please allow additional time for your Dealer to process your vehicle.

This letter identifies your vehicle. Presentation of this letter to your Dealer will assist their Service personnel in completing the necessary correction to your vehicle in the shortest possible time.

Further assistance, if required, may be obtained from the General Motors Zone Office nearest you. Your vehicle Owner's Manual provides the location and phone number of each respective Zone Office.

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

Service Department General Motors of Canada Limited

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.