CAMPAIGN:REPLACE DIPSTICK INCORRECT OIL LEVEL READING

1986 Oldsmobile Delta 88 Equipped With a 3.8L (VIN Code 3) Engine

DEFECT INVOLVED:

General Motors has determined that some 1986 Delta 88 models equipped with a 3.8L V-6 engine may have been assembled with an engine oil dipstick which will give an incorrect oil level reading. The engines in these vehicles were properly filled with oil at the time of manufacture. If the oil level is checked and then adjusted to the incorrect dipstick reading, an overfill of approximately two (2) litres would result. This overfill may cause aeration of the oil resulting in loss of oil pressure, possible noise, and poor engine performance.

To prevent the possibility of this condition occurring on vehicles involved, the original engine oil dipstick is to be replaced with a new correct reading dipstick.

Since dipsticks can be installed very easily, and because we do not want to cause owners unnecessary inconvenience, the new dipsticks have been furnished directly to affected owners of record. Owners may install them personally or they may request Dealer assistance for installation.

If requested, Dealers are to perform this recall campaign on affected vehicles at no charge to the owner regardless of time, mileage or ownership.

VEHICLES INVOLVED:

Involved are certain 1986 Delta 88 models equipped with a 3.8L LG3 (VIN Code 3) engine within the following VIN breakpoints:

Assembly Plant Beginning Up To and Including -------------- --------- -------------------- Willow Run (W) GW429742 GW431011

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:

Replacement dipsticks have been mailed directly to owners of involved vehicles. In addition, the correct quantity of engine oil dipsticks is being shipped to each Dealer on a "NO CHARGE" basis (only for VINs on their printout with no owner name).

PARTS AND LABOUR CLAIM INFORMATION:

Should a customer approach you to perform campaign work, please submit as warranty claim with special labour operation T8007 which pays .3.

SERVICE PROCEDURE:

Owners may elect to install the dipstick themselves using the procedure outlined in the Owner Letter. If, however, an owner elects to have the Dealer install the dipstick, the following service procedure is to be used.

1. Raise the hood of the vehicle, locate the engine oil dipstick, and replace it with the dipstick furnished.

2. Using new (furnished) dipstick, check engine oil for proper level. Adjust if necessary.

3. Install campaign identification label.

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.

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.