SAFETY CAMPAIGN: POSITIVE CRANKCASE VENTILATION (PCV)
Models: 1987-88-89 I-Mark Turbo
TO: ALL GENERAL MOTORS AND PASSPORT DEALERS
DEFECT INVOLVED:
General Motors of Canada has determined that a defect which relates to motor vehicle safety may exist in certain 1987-88 I-Mark "Turbo" model vehicles. The positive crankcase ventilation (PCV) valve on these vehicles may provide inadequate air flow under low engine load conditions. This can allow a water/oil mixture to build up in the hose from the oil separator to the air inlet duct. After the engine is stopped, this water/oil mixture can, under cold weather conditions freeze and completely block the oil separator to air duct hose. Under normal engine operation, blockage of this hose can result in increased pressure within the crankcase, which can cause oil leaks. If a sufficient quantity of oil comes in contact with the hot exhaust system, an engine compartment fire could result without prior warning.
To prevent this condition from occurring, it will be necessary to replace the PCV valve on all involved vehicles with a newly designed valve. The new valve will allow greater air flow in the oil separator to air duct hose and keep water/oil from accumulating.
VEHICLES INVOLVED:
Involved are certain 1987-88 I-Mark "Turbo" model vehicles produced within the following VIN breakpoints:
MODEL/YEAR FROM THROUGH ---------- ---- ------- 1987 H8801855 H8802338 1988 J7505523 J7537688 1989 K7500101 K7500266
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/ Part Number Description Vehicle ----------- ----------- -------- 94324416 Valve - Crankcase (PCV) 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 ----------- ----------- --------------- 2A Install PCV Valve .3
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:
1. Remove existing PCV Valve, located at rear of cylinder head cover on right hand (passenger) side of vehicle.
2. Install new PCV Valve (P/N 94324416).
3. Inspect oil separator to air duct hose for obstruction, clear hose of any obstruction and reinstall.
4. 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.
