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CAMPAIGN:FUEL TANK PLASTIC RESERVOIR ATTACHMENT

SUBJECT: FUEL TANK PLASTIC RESERVOIR ATTACHMENT

MODELS: 1995 S/T 4-DOOR UTILITIES

General Motors has determined that CERTAIN early production 1995 4-door Jimmys have a condition which could result in fuel leakage in certain high speed frontal collisions. If one of these vehicles, with a substantial amount of fuel in the tank, were involved in a frontal collision at speeds higher than those specified by Federal safety standards, a hole in the bottom of the tank could occur resulting in fuel leakage.

To correct this condition, dealers are to apply a seal and cover to the exterior of the tank bottom.

VEHICLES INVOLVED

Involved are CERTAIN 1995 4-door Jimmys built within the following VIN breakpoints:

Year Model Plant Code From Through

1995 S/T K SOP K521352 1995 S/T 2 SOP 2524460

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. Disconnect the negative battery cable from the battery after noting all electronic device settings.

2. Raise vehicle on hoist and support with safety stands.

3. Remove the steel shields (RPO ZM5) from around the fuel tank, if equipped (Figure 1).

4. Using a transmission jack, support the rear section of the fuel tank (use suitable padding between the fuel tank and jack, Figure 4).

5. Loosen the rear fuel tank strap (Figure 2, Item 3) in order to swing the side rail protector (Figure 5, Item 1) away from the bottom of the fuel tank.

6. Secure the side rail protector in the "swung out" position.

7. Use a "pre-sol" solution (DuPont 3919 or equivalent) to remove any dirt and grime from the fuel tank area where the seal and cover will be applied (Figure 3). The cleaning solution used must not leave any oily residue or film on the surface of the tank.

NOTE: Prior to applying the fuel tank seal and cover in steps 8 and 9, be certain the surface is completely clean and dry.

NOTE: The seal and cover (which is Butyl Mastic") must be applied above 60 degrees Fahrenheit.

THE WORDS "SEAL" OR "COVER" ARE PRINTED ON THE APPROPRIATE PART. IT IS IMPORTANT THAT EACH PART IS INSTALLED IN THE PROPER SEQUENCE.

8. Take the fuel tank seal with the thin aluminum foil backing and Peel approximately one inch of the protective paper away from the adhesive material.

9. Align the exposed adhesive side of the seal along the radius bend line at the fuel tank strap channel radius (Figure 4) and apply seal to fuel tank. Carefully remove remaining protective paper from the seal and apply the seal firmly to the bottom of the fuel tank. Smooth out the seal evenly onto the metal surface. Keep the side edges of the seal in parallel with fuel tank sides (make sure the seal's edges do not go beyond the radius of the other sides).

10. Take the cover with the thicker aluminum sheet backing and peel back approximately one inch of the protective paper from the adhesive material.

11. Align adhesive side of the cover along the same radius bend line on top of the seal (Figure 4) that was applied in step 9 above. Remove the remaining protective paper from the cover and apply the cover firmly over top of the seal, smoothing it out evenly.

12. Relocate the fuel tank side rail protector (be certain to center the rear protector tabs over the tank flange, Figure 2, Item 2). Reposition the fuel tank strap and insulator. Torque the fuel tank strap bolt to 34 Nm (25 lb. ft.) (Figure 2, Item 4).

13. Remove transmission jack from rear of fuel tank. Re-install fuel tank steel shield (RPO ZM5) to vehicle if equipped (Figure 1, Item 2).

14. Lower vehicle from hoist and reconnect the negative battery cable. Reset all electronic devices as noted in step 1.

15. Install Campaign Identification Label.

PARTS INFORMATION

50% of parts required for this campaign will be preshipped to involved dealers of record. This preshipment will occur the week of May 1, 1995. Parts received for recently transferred vehicles should be forwarded by the original dealer (with an accompanying phone call) to the dealer that received the transferred vehicle.

Additional 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 ----------- ----------- -------- 15727274 Fuel Tank Seal and Cover Kit 1

WARRANTY INFORMATION

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

Labor Operation *Time Cause Number Description Allowance Code ---------------------------------------------------------------------------- V9610 Install Fuel Tank Seal and Cover 0.5 96 Kit (without ZM5 Shield)

V9611 Install Fuel Tank Seal and Cover 0.8 96 Kit (with SM5 Shield)

T2440 Fuel Top - Off + 96

T2441 Wash Vehicle ++ 96

NOTE: LABOR OPERATIONS T2440 AND T2441 ARE TO BE PERFORMED ONLY ONCE FOR VEHICLES INVOLVED IN CAMPAIGN 95C31/95C33/95C34/95C35.

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

+ The amount to be entered in the "Net Amount" column should represent the cost of the fuel required to fill the vehicle's tank for a customer. Note that the amount submitted should represent the self-service price of regular unleaded fuel.

++ The amount to be entered in the "Net Amount" column should represent the cost for a customer car wash up to $6.00.

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 Rev. 2/94.

Dear GMC Truck Owner,

Your complete satisfaction with your 1995 GMC Truck Jimmy is most important to us. Throughout a production run, enhancements typically are made to our vehicles as part of our continuous improvement process. This letter outlines one of these enhancements which GMC Truck would like to make available to you at no charge.

Federal Motor Vehicle Safety Standards require vehicles sold in the U.S. to be able to pass specified crash tests with very little fuel leakage, if any. Your 1995 Jimmy surpasses the requirements of these safety standards. However, recent crash tests revealed that if a four door Jimmy with a substantial amount of fuel in the tank were involved in a frontal collision at speeds higher than those specified by the federal standard, a hole in the tank could occur resulting in fuel leakage. While fuel leakage is always possible in higher speed crashes, we were not satisfied with this performance. Consequently, we have developed a seal and cover for the exterior of your vehicle's fuel tank which will avoid this fuel leakage. Applying this seal and cover can be done without removing or disassembling your Jimmy's fuel system.

Instructions for performing this service has been sent to your GMC Truck dealer. This enhancement will be made to your vehicle at no charge to you. Please contact your GMC Truck dealer to arrange a convenient appointment and ensure the proper parts are available to complete this service. The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in installing this enhancement to your vehicle 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.

Your complete satisfaction with your 1995 GMC Truck Jimmy is important to us and we encourage you to see your GMC Truck dealer for this modification.

GMC TRUCK DIVISION General Motors Corporation


Object Number: 93888  Size: LF


Object Number: 94334  Size: LF


Object Number: 85118  Size: FS


Object Number: 85117  Size: FS


Object Number: 85817  Size: FS

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.