CAMPAIGN: ENGINE BLOCK HEATER NOT INSTALLED. GMC Truck Jimmy

SUBJECT: ENGINE BLOCK HEATER NOT INSTALLED

MODELS: 1996 S/T WITH K05/8U4 (LINDEN ONLY)

On CERTAIN 1996 S/T Pickups and Utilities built before October 2, 1995, at the Linden Assembly Plant, the ordered optional block heater (K05/8U4) was not installed. However, the price of the option was still included in the dealer invoice.

To correct this condition, dealers will install the omitted engine block heater components.

VEHICLES INVOLVED

Involved are CERTAIN 1996 S/T Pickups and Utilities built before October 2, 1995, with ordered option K05/8U4 (engine block heater) built within the following VIN breakpoints:

Plant Year Model Code From Through ------------------------------------------------------------------------- 1996 S/T K TK500040 TK505071

The specific vehicles involved in this campaign have been identified by Vehicle Identification Number (VIN) 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. Drain engine coolant, following the instructions contained in the 1996 S/T Truck Service Manual; Section 6B-10.

2. Remove coolant jacket plug, following the instructions contained in the 1996 S/T Truck Service Manual; Section 9E-1, Figures 1-4.

3. Install a coating of lubricant to the 0-ring seal and the cleaned surface of plug opening in the block. Use lubricant P/N 12346004 for the LN2 Engine and P/N 12345996 for the LF6 and L35 Engines.

4. Install engine block (coolant) heater and push tight to the engine block, following the instructions contained in the 1996 S/T Truck Service Manual; Section 9E-2.

5. Tighten bolt to 1.9 Nm (17 lbs. in.) until both locking wings draw tight against inner wall of engine block.

6. Connect heater cord to the coolant heater and route heater cord, following the instructions contained in the 1996 S/T Truck Service Manual; Section 9E-2.

7. Refill the engine coolant system following the instructions contained in the 1996 S/T Truck Service Manual; Section 6B-2, 3 and 10.

8. Check the system for leaks.

9. Install Campaign Identification Label.

PARTS INFORMATION

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). All Goodwrench parts system test dealers should order on a "VIP" order.

Part Number Description Quantity ----------- ----------- -------- LN2 ENGINE ---------- 10137617 Heater Assembly - LN2 1 15685323 Cord - LN2 1 11509086 Strap - LN2 4 8911294 Clip - LN2 1 11508581 Bolt - LN2 1 12346004 Lubricant - LN2 5 ml 12346290 (Dex-Cool) Engine Coolant - LN2/LF6/L35 1 Quart

LF6/L35 ENGINE -------------- 12556261 Heater Assembly - LF6/L35 1 15732716 Cord - LF6/L35 1 11509086 Strap - LF6/L35 3 12345996 Lubricant - LF6/L35 1 12346290 (Dex-Cool) Engine Coolant - LN2/LF6/L35 1 Quart

WARRANTY INFORMATION

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

Labor Labor *Other Net Description CC FC Op Hrs Hrs Item ----------- ---------------------------------------- LN2 Engine - MA 96 V9835 0.7 0.1 ** Install Engine Block Heater LF6/L35 Engine - MA 96 V9836 0.7 0.1 ** Install Engine Block Heater

* Campaign Administrative Allowance

** Engine Coolant and lubricant are net items. Submit actual cost for coolant plus 40% markup. Enter as Net Item.

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 must be inserted with a typewriter or ball point pen. This label is to be used in conjunction with the clear protective plastic cover provided with the Campaign Identification Labels.

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.

Additional Campaign Identification Labels and covers are available in sheets of 49 by calling VISPAC, Incorporated at 1-800-269-5100 (Monday through Friday 8:00 AM to 4:30 PM EST).

ADMINISTRATIVE PROCEDURE

Procedures covering this campaign are outlined in Section IV of your dealership's " WINS Claims Processing Manual"..

Dear GMC Truck Customer:

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.

On certain 1996 S/T Pickups and Utilities built before October 2, 1995, such as yours, the ordered optional block heater (K05/8U4) was not installed. However, the price of the option was still included in the dealer invoice.

To be absolutely sure that your vehicle is to specifications, we will install the omitted engine block heater components.

Instructions for performing this service have been sent to your GMC Truck dealer, and parts are available. Please contact your GMC Truck dealer to arrange a service date as soon as possible. This procedure will take about 45 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 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.