CAMPAIGN:PROPSHAFT TUBES WELD OFF LOCATION (FORT WAYNE)

Subject: Prop Shaft Tube Welds Off Location

Models: 1993 "K" 10703 Trucks (Built at Fort Wayne)

TO: ALL GENERAL MOTORS DEALERS:

General Motors of Canada Limited has determined that certain 1993 K 10703 Pickup Trucks (short wheel base half-ton 4-Wheel Drive) may have been built with one-piece prop shafts having tube to yoke welds off location. in this condition, the attachment of the front and/or rear yoke to the prop shaft tube may not withstand normal driveline torque inputs causing the tube to separate from the yoke. If the tube were to separate from a yoke while the vehicle was moving, the prop shaft could cause damage to the underbody sheet metal of the cab, or possibly detach from the vehicle.

To prevent this condition from occurring, dealers are to inspect the vehicles to determine if a Saginaw Three Rivers plant pump shaft was installed and, if so, replace it.

VEHICLES INVOLVED:

Involved are certain 1993 K 10703 trucks built at Fort Wayne Assembly. Involved vehicles are listed below:

1GCEK14H2PZ213351 1GTEK14KXPZ537174 1GCEK14K2PZ213720 1GTEK14K9PZ537182 1GECK14K5PZ213856 1GTEK14K5PZ537552

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:

All unsold new vehicles in dealer's possession and subject to this campaign Must be held and inspected/repaired per the Service Procedure of this Campaign Bulletin before owners take possession of these vehicles.

Dealers are to perform this campaign on all involved vehicles at no charge to owners, regardless of kilometers traveled, age of vehicle, or ownership, from this time forward.

Owners of vehicles recently sold from your new vehicle inventory with no owner information indicated on the dealer listing, are to be corrected by the dealer, and arrangements made to make the required correction according to instructions contained in this bulletin. This could be done by mailing to such owners a copy of the owner letter accompanying this bulletin. Campaign follow- up cards should not be used for this purpose, since the owner may not as yet have received the notification letter.

In summary, whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or is in your dealership for service in the future, please take the steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.

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 (see copy of owner letter included with this bulletin). The listings provided are for campaign activity only and should not be used for any other purpose.

PARTS INFORMATION:

Parts required to complete this campaign should be ordered through regular channels, as follows:

Part Number Description Quantity/Vehicle ----------- ----------- ---------------- 7849724 Prop Shaft 1

PARTS AND LABOUR CLAIM INFORMATION:

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

Repair Code Description Time Allowance ----------- ------------- -------------- 1A Inspect Rear Prop Shaft Only, .3 Replacement Not Required

2A Inspect and Replace Prop Shaft .5

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. Raise vehicle on hoist.

2. Inspect propeller shaft identification label for manufacturing.

a) Saginaw-Three Rivers identification label (with bar code); the propeller shaft must be replaced. Proceed to step 3.

b) C-P-C Parma identification label (without bar code); the propeller shaft is not involved. to step 5.

c). Identification label is not present; the propeller shaft must be replaced. Proceed to step 3.

3. Remove the propeller shaft Remove the four bolts and two retainers attaching the rear U-joint to the rear axle pinion flange and slide the slip yoke from the rear of the transmission.

4. Install the new propeller shaft Slide the slip yoke into the rear of the transmission and install the two retainers and four bolts attaching the rear U-joint to the rear axle pinion flange. Torque the bolts to 20 N.m (15 lbs. ft).

5. Lower the vehicle, install the campaign completion sticker.

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:

General Motors has determined that certain 1993 K 10703 pickup trucks (short wheel base half-ton 4-Wheel drive) may have been built with one-piece prop shafts having tube to yoke welds off location.

In this condition, the attachment of the front and/or rear yoke to the prop shaft tube may not withstand normal driveline torque inputs causing the tube to separate from the yoke. If the tube were to separate from a yoke while the vehicle was moving, the prop shaft could cause damage to the underbody sheet metal of the cab, or possibly detach from the vehicle.

To prevent this condition from occurring, your dealer will inspect and, if necessary, replace the prop shaft on your vehicle.

This service will be provided for you at no charge.

Please contact your GM dealer as soon as possible to arrange a service date.

If parts are required, ask your dealer for details regarding their availability. If parts are not in stock, they can be ordered before scheduling your service date.

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.

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

Customer Support 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.