CAMPAIGN:FUEL RETURN HOSE FITTING LEAK OR CRIMP
SUBJECT. FUEL RETURN HOSE FITTING CRIMP
MODELS: 1990 M-VAN WITH 4.3L OR 2.5L ENGINE 1990 B6P042 SCHOOL BUS EQUIPPED WITH 366 V-8 GAS ENGINE (LSO) AND 60 GALLON FUEL TANK (NH9)
The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time.
If the condition is not adequately repaired within a reasonable time, the owner may be entitled to an identical or reasonably equivalent vehicle at no charge, or to a refund of the purchase price less a reasonable allowance for depreciation.
To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule appointments with owners and to repair their vehicles as soon as possible. As you will see in reading the attached copy of the letter which is being sent to owners, the owner is being instructed to contact the nearest GMC Zone Office if the dealer does not remedy the condi- tion within five days of the mutually agreed upon service date. If the condition is not remedied within a reasonable time they are instructed how to contact the National Highway Traffic Safety Administration.
DEFECT INVOLVED
General Motors has determined that a relates to motor vehicle safety exists in certain 1990 GMC M-Vans with 4.3L or 2.5L engine and 1990 B6P042 School Buses equipped with 366 V-8 TBI engine (LSO) and 60 gallon fuel tank (NH9). These vehicles may have fuel return hoses which may break at either crimped coupling. If this coupling was to separate and an ignition source was present, an engine compartment fire could occur.
VEHICLES INVOLVED
Involved are certain 1990 M-Vans with 4.3L or 2.5L engine and 1990 B6P042 School Buses equipped with 366 V-8 gas engine (LSO) and 60 gallon fuel tanks (NH9) built within the following VIN breakpoints:
Model Year Model From Through ----------- ------ --------- ---------- 1990 M-Van LB502001 LB509810 B6P042 SOP LV513731 School Bus
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.
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. Dealers are to inspect and correct all affected vehicles in new and used vehicle stock prior to their sale.
Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service in the future, you should take the steps necessary to ensure 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 contracted by the dealer and arrangements made to make the required correction according to instructions contained in this bulletin.
To prevent this condition from occurring, a properly crimped fuel return hose will be installed on all involved vehicles.
If no owner's name and address were available to GMC Truck Division at the time of campaign initiation the dealer will 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 records may be updated and the appropriate notification mailed to the owner.This second copy should then 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 addresses has been furnished to the involved dealers to enable dealers owners involved in this campaign. This listing may contain owner names and addresses obtained from State Motor Vehicle Registration. The use records 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
1990 M-VAN (See Figure 1)
1. Disconnect negative ground cable from battery.
2. Remove engine cover and disconnect front fuel return line [11 from injector fuel return pipe.
3. Raise vehicle up on hoist.
4. Disconnect front fuel return line [1] from rear fuel return pipe at the left hand frame. Drain excess fuel into an available container.
5. Remove fuel lines clip [7] at bottom of filter [4].
6. Remove fuel filter clamp mounting screw [6] and slide front fuel return line [1] out of clamp [5] and discard return line.
7. Install new front fuel return line [1] in clamp [5] and loosely install clamp mounting screw [6].
8. Reconnect front fuel return line [1] to rear fuel return line and to injector fuel return line. Torque connections to 20-34 N-m (15-25 lb.ft).
9. Reinstall fuel lines clip [7].
10. Tighten filter clamp screw [6] to 9-13 N.m (80-115 lb.in).
11. Lower vehicle.
12. Reconnect battery negative ground cable. Operate engine and check fuel line connections for leakage.
13. Reinstall engine cover.
14. Install "Campaign Identification Label"
1900 B6 SCHOOL BUS (See Figure 2)
1. Disconnect negative ground cable from battery.
2. Disconnect fuel return pipe assembly.
3. Remove the three retaining clamps [5] holding the fuel return line to the frame.
4. Disconnect return fuel line [1] at rear of engine.
5. Remove fuel return line [1] and discard.
6. Install new fuel return line [1] and connect at rear of engine. Torque fitting to 20-34 N-m (15- 25 lb.ft.)
7. Reinstall line clamps [5] and torque to 35-45 N-m(26-34 lb.ft.)
8. Reconnect fuel return line [1] to fuel sender unit at tank.
9. Reconnect negative battery ground cable, start engine, and check for for fuel leaks.
10. Install "Campaign Identification Label"
PARTS INFORMATION
Parts are to be obtained from General Motors Services Parts Operation (GMSPO). To ensure that these parts will be obtained as soon as possible, they should be ordered from GMSPO on a C.I.O. order with no special instruc- tion code but order under and advice code (2).
Part No. Description Quantity ----------------- -------------- ---------- 1990 M- 15522189 Pipe Assembly 1 Van Front Fuel Return
1990 B6 15631873 Pipe Assembly 1 School Fuel Return Bus
Dear GMC Owner:
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1990 GMC M-Vans with 4.3L or 2.5L engine. These vehicles may have fuel return hoses which may break at either crimped coupling. If this coupling was to separate and an ignition source was present, an engine compartment fire could occur.
To prevent this condition from occurring, a properly crimped fuel return hose will be installed on all involved vehicles. This service will be completed for you at no charge.
Instructions for performing this service have been sent to your GMC dealer. Parts are available. Please contact your dealer to arrange a service date. The labor time necessary to perform this correction will be approximately 30 minutes. Please ask your dealer how much additional time will be needed to schedule and process your vehicle.
Your GMC dealer is best equipped to obtain parts and provide service to ensure your vehicle is corrected as promptly as possible. However, if you take your vehicle to your dealer on the agreed service date and they do not service this condition on that date or within five days, we recommend you contact your nearest GMC Truck Zone Office by telephone. The Zone Office will assist you and your dealer in getting your vehicle corrected. The telephone numbers of the Zone Offices are listed in your Warranty and Owner Assistance Information Manual.
After contacting your dealer and the Zone Office, if you are still not satisfied that we have done our best to remedy this condition without charge within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 400 Seventh Street, S.W., Washington, D.C. 20590, or call 800-424-9393 (Washington, D.C. residents use 366-0123).
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 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 safety and continued satisfaction with our products.
WARRANTY INFORMATION
Dealers should submit an accurately fill out Warranty Repair Order on each vehicle completed under this campaign.
Labor Operator *Time Trouble Number Description Allow. Code ------ ------------- ------- ------ V6200 M-Van- Install .6 Hr 96 Front Fuel Ret. Pipe Assembly
V6201 B6P042- Install 1.3 Hr 96 Fuel Ret. Pipe Assembly
* For dealer to receive Administrative Time Allowance associated with this campaign, add 0.1 hour to the Labor Operation Time Allowance.
CAMPAIGN IDENTIFICATION LABEL
Each vehicle corrected in accordance with the instructions outfined in this product campaign bulletin will require a "Campaign Identification Label". Each label provides a space to include 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 dealer- ship's "GM Truck Claims Processing Manual" #P 8919.
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.
