CAMPAIGN:COOLANT PUMP PULLY. GMC Truck S15 Pickup - 2WD 1993

For 1990-2009 cars

# CAMPAIGN:COOLANT PUMP PULLY

#### SUBJECT: COOLANT PUMP PULLEY

#### MODELS: 1993 S TRUCKS EQUIPPED WITH 2.8L ENGINE (RPO LL2, VIN R)

General Motors has determined that CERTAIN 1993 S Trucks equipped with 2.8L engines and air conditioning may have been produced with a water pump pulley that could fail. This could result in loss of accessory drive components including power steering assist, generator and water pump. The engine will continue to run, but the driver would be warned of the failure by one or more of the following conditions:

A. Likelihood of underhood noise at time of failure.

B. Generator light on or gage indicating discharge of battery.

C. Engine temperature light on or gage reading higher than normal engine temperature.

D. Loss of power steering assist.

To correct this condition, dealers are to replace the water pump pulley on all involved vehicles.

#### VEHICLES INVOLVED

Involved are CERTAIN 1993 S Trucks equipped with 2.8L engines (RPO LL2, VIN R), 5-speed manual transmissions and air conditioning built within the following VIN breakpoints:

Year Model Plant Plant From Through Code ---------------------------------------------------------------------------- 1993 S15 Shreveport 8 SOP EOP 1993 S15 Pontiac West 0 SOP EOP

The specific vehicles involved in this campaign have been identified by Vehicle Identification Number Computer Listings. These listings are furnished to all involved dealers with the campaign bulletin. Dealers should confirm vehicle eligibility through VISS (Vehicle Information Service System) or SERVICENET prior to beginning campaign repairs.

#### DEALER CAMPAIGN RESPONSIBILITY

All unsold vehicles in dealers' 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 service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward.

Owners of vehicles recently sold from your vehicle inventory are to be contacted by the dealer and arrangements made to make the required correction according to instructions contained in this bulletin.

In summary, whenever a vehicle subject to this campaign enters your 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.

If the name and address of the owner of an involved vehicle was unavailable to GMC Truck Division at the time of campaign initiation, the dealer must determine the owner's name and address from the dealership sales records. Please provide this information directly on the second copy of the listing next to the applicable VIN so that our records may be updated and the appropriate notification mailed to the owner. This second copy should then be submitted to the address listed below in the previously supplied yellow campaign envelopes.

GMC Truck Division General Motors Corporation 101 Union Street Plymouth, Michigan 48170

#### OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by GMC Truck Division (see copy of owner letter included with this bulletin). A listing of owner names and addresses has been furnished to the involved dealers to enable dealers to follow up with owners involved in this campaign. This listing 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 this campaign.

#### SERVICE PROCEDURE

1. Open hood and install fender cover and disconnect negative battery cable. (Note the Radio setting.)

2. Remove the (2) two upper radiator shroud attachment bolts.

3. Remove the (4) four fan clutch assembly attachment nuts.

4. Remove accessory drive belt by rotating the belt tensioner.

5. Remove coolant pump pulley.

6. Install new coolant pump pulley.

7. Reinstall the fan clutch assembly and torque the (4) four attachment nuts to 24 Nm or 17 Ft Lbs.

8. Reinstall accessory drive belt.

9. Reinstall upper fan shroud and torque the (2) two attachment bolts to 10 Nm or 90 In. Lbs.

10. Connect battery.

11. Install the Campaign Identification Label.

#### PARTS INFORMATION

#### NOTICE: Each dealer involved will be preshipped at least one water pump pulley during the week of April 4, 1994.

Parts are to be obtained from General Motors Service Parts operation (GMSPO). To ensure parts are obtained as soon as possible, order them from GMSPO on a C.I.O. order with no special instruction code but order under an advise code (2).

#### Part Number Description Quantity

24503896 Water Pump 1 per vehicle

#### WARRANTY INFORMATION

Dealers should submit a warranty claim on each vehicle completed under this campaign.

Labor Operation *Time Parts Trouble Number Description Allowance Allowance Code ---------------------------------------------------------------------------- V 8510 Replace Water Pump 0.4 ** 96 Pulley

* For dealer to receive Administrative Time Allowance associated with this campaign, add 0.1 hour to the Labor Operation Time Allowance.

** The amount identified in the "Parts Allowance" column above represents 30% of dealer net for parts that are furnished in this campaign. This amount is to be placed in the Net Item Amount column of the claim and Type Code "M."

#### CAMPAIGN IDENTIFICATION LABEL

Each vehicle corrected in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label." Each label provides a space to include the campaign number and five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ball point pen.

Each "Campaign Identification 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.

#### ADMINISTRATIVE PROCEDURE

Procedures covering this campaign are outlined in Section V of your dealership's "GMC Truck Warranty Claims Processing Manual" #P9119.

Dear GMC Truck Owner:

As a valued customer. your complete satisfaction with your GMC truck is our goal. In keeping with this goal, we want to let you know that we have discovered a problem that could affect your vehicle and we want to take care of it at no charge to you.

General Motors has determined that on certain 1993 (S models) equipped with a 2.8L engine and air conditioning may have been produced with a water pump pulley that could fail. This condition could result in loss of accessory drive component operation which includes power steering assist, generator and water pump. The engine will continue to run, but the driver would be warned of the failure by one or more of the following conditions.

A. Likelihood of underhood noise at time of failure.

B. Generator light on or gage indicating discharge of battery.

C. Engine temperature light on or gage reading higher than normal engine temperature.

D. Loss of power steering assist.

To be absolutely sure that your vehicle is to specifications, we will replace the water pump pulley with an improved design. This service will be performed for you at no charge.

Please contact you GMC dealer to arrange a service date as soon as possible. Instructions for performing this service have been sent to your GMC Truck dealer, and parts are available. This procedure will take about 25 minutes to complete, but you should ask how much additional time your dealer will need to schedule and process your vehicle.

The enclosed postage paid owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction to your vehicle in the shortest possible time. If you have sold or traded your vehicle, please furnish us the complete name and address of the person you sold or traded your vehicle to and return the card to us.

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

GMC TRUCK DIVISION GENERAL MOTORS CORPORATION

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.