CAMPAIGN: ENGINE UPPER COOLANT RADIATOR INLET HOSE
Subject: PRODUCT CAMPAIGN 91C05 A ENGINE UPPER COOLANT (RADIATOR INLET) HOSE
Model and Year: 1991 CHEVROLET CORVETTE WITH L98 (STANDARD) ENGINE
TO: ALL CHEVROLET DEALERS
General Motors has determined that certain 1991 Chevrolet Corvette model vehicles with L98 (standard) engines may have been built with engine upper coolant (radiator inlet) hoses which contact the accessory drive belt. If this condition continues to exist, engine coolant loss due to hose wear through may occur.
To correct this condition, dealers are to replace the current upper coolant hose which will allow for greater clearance to the accessory drive belt.
VEHICLES INVOLVED
Involved are certain 1991 Chevrolet Corvette model vehicles with L98 (base) engines built within the following VIN breakpoints:
PLANT YEAR MODEL PLANT CODE FROM THROUGH ---- ------ ------ ---- ------ -------- 1991 Y-Car Bowling Green "5" M5100001 M5103689
Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.
These listings 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 the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of owner letter included with this bulletin).
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 in to 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 correction according to instructions contained in this bulletin.
PARTS INFORMATION
Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO) . To ensure 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 on an advise code (2).
Quantity/ Part Number Description Vehicle ---------- ------------ -------- 10135652 Engine Upper Cooling Hose 1 (Radiator Inlet)
SERVICE PROCEDURE
1. Remove and replace engine upper coolant (radiator inlet) hose referring to the 1991 Corvette Service Manual (Section 6B) as needed. Be sure to check for leaks after replacing hose.
2. Install Campaign Identification Label.
CAMPAIGN IDENTIFICATION LABEL
Each vehicle corrected in accordance with the instructions outlined in this 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 a ball point pen.
CAMPAIGN IDENTIFICATION LABEL (CONIT)
Each "Campaign Identif ication 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.
CLAIM INFORMATION
Submit a Product Campaign Claim with the information indicated below:
FAILED PARTS CC-FC LABOR LAS OTH REPAIR PERFORMED PC PART NO. ALLOW OP HRS HRS ------------------ -- ------- ----- ----- ----- --- ---- Remove and Replace 1 10135652 ** SK-00 V6450 0.3 0.1 Upper Cootant Hose
Campaign Administrative Allowance.
The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 30% of all parts required for the repair.
Dealers will automatically receive the correct labor and material allowance based on the labor operation performed.
Refer to the Chevrolet Claims Processing Manual for details on Product Campaign Claim Submission.
Dear Chevrolet Corvette Owner:
This notice is sent to inform you that Chevrolet Motor Division is conducting a recall campaign that includes your vehicle.
REASON FOR THIS RECALL
General Motors has determined that certain 1991 Chevrolet Corvette model vehicles with L98 (standard) engines may have been built with engine upper coolant hoses which contact the accessory drive belt. If this condition continues to exist, coolant loss due to hose wear through may occur.
WHAT WE WILL DO
To correct this condition, your Chevrolet dealer will replace your Corvette's upper coolant hose which will allow for greater clearance to the accessory drive belt. This service will be performed for you at no charge.
WHAT YOU SHOULD DO
Please contact your Chevrolet dealer as soon as possible to arrange a service date and so the dealer may order the parts necessary to perform the repair. Instructions for making this correction have been sent to your dealer. Please ask your dealer if you wish to know how much time will be needed to schedule, process and repair your vehicle.
The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid 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 continued satisfaction with our products.
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.
