CAMPAIGN: DIESEL ENGINE FUEL LINE CLIPPING HOSE RUB THROUGH
Models: 1990 CK 10-30 with LH6/LL4 6.2L Diesel Engine
General Motors of Canada has determined that a defect which relates to Motor Vehicle Safety exists on certain 1990 CK 10-30 model trucks equipped with 6.2L diesel engines. The front diesel fuel feed and/or return lines of these vehicles can contact the automatic transmission shift linkage cordon shaft and/or, on K models, the front propshaft. If this contact occurs, a hole could be rubbed through the line and a diesel fuel leak may occur near the exhaust crossover pipe. A fuel leak of this type may result in an engine compartment fire.
To prevent this condition from occurring, a new design fuel line routing bracket will be installed. Additionally, the fuel lines will be inspected for wear, and if necessary, replaced.
VEHICLES INVOLVED:
Involved are certain 1990 CK 10-30 model trucks equipped with 6.2L diesel engines built within the following VIN breakpoints:
Model Year Plant From Through ---------- -------- -------- -------- 1990 GMC Oshawa L1500724 L1501274 Pontiac East LE500002 LE502838
CHEV Oshawa L1101025 L1104190 Pontiac East LE100017 LE110162
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:
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.
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 be sure 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 contacted by the dealer, and arrangements made to make the required modification according to instructions contained in this bulletin.
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. The listings provided are for campaign activity only and should not be used for any other purpose.
PARTS INFORMATION:
Parts kits required to complete this Campaign will be shipped directly to involved dealers. Parts kit will be shipped on a "no charge" basis. DO NOT ORDER FROM GENERAL MOTORS SERVICE PARTS DEPARTMENT.
Each part kit will consist of the following:
Description Quantity
Bracket, Fuel Lines 1
Clip, Fuel Lines (Metal) 1
Clip, Fuel Lines (Plastic) 1
If inspection of fuel lines shows chafing, which requires fuel line replacement, order "O" rings (see part number information below) through regular channels.
To order Fuel Feed and Return Line Assembly please call Jeannine Lockhart, Campaigns, at 416-644-6865.
Part Number Description Quantity ----------- ------------------------- ----------- 22516256 "O" Ring - Fuel Return Line As Required
22514722 "O" Ring - Fuel Feed Line As Required
See Parts Fuel Feed and Return Line Assembly As Required Information
PARTS AND LABOUR CLAIM INFORMATION:
Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card, RAPID terminal or DCS transmission in accordance with the following:
Repair Code Description Time Allowance ----------- --------------------------- -------------- 2A Inspect Fuel Lines for Chafing - .5 Install New Bracket
3A Inspect Fuel Lines for Chafing - .9 Replace Fuel Line and Install New Bracket
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 for repair code 3A.
An allowance of $1.00 has been included in both repair codes for Part Kit handling.
SERVICE PROCEDURE:
1. Raise vehicle on hoist.
2. Inspect fuel lines at the automatic transmission shift linkage cordon shaft and/or on K models, the front propshaft. If inspection shows wear, it will be necessary to replace the fuel lines. Torque fittings to 20-34 N.m (15-25 lb. ft.). If lines are replaced, also replace "O" rings on feed and return lines.
3. Remove and retain nut (2, Fig. 1) holding existing metal fuel line clip (4, Fig. 1) to transmission housing and discard metal clip. Also, remove plastic fuel lines clip (3, Fig. 1) and discard.
TO REMOVE NUTS, THEY MUST BE ACCESSED FROM TOP REAR OF TRANSMISSION FROM UNDERSIDE OF VEHICLE.
4. Remove nut (2, Fig. 3) holding existing transmission harness clip (3, Fig. 3) to transmission housing. Retain clip and nut.
5. Install new routing bracket (5, Fig. 2) onto transmission housing routing wiring harness (1, Fig. 3) through bracket at point marked "X" on Figure 3. Harness must be routed over fuel lines and under upper leg of bracket.
BRACKET (5, FIG. 2) MUST BE INSTALLED ON STUDS BEFORE NEW CLIPS ARE INSTALLED.
6. Install new metal clip (6, Fig. 2) on fuel lines. Install new plastic fuel line clip (4, Fig. 2) on lower portion of fuel lines.
7. Press rosebuds of lower plastic clip (4, Fig. 2) into holes provided in the routing bracket (5, Fig. 2).
8. Fasten new metal fuel line clip (6) onto upper stud of transmission housing (at bracket) with nut (2, Fig. 2). Torque nut to 20-25 N.m (15-18 lbs.-ft.).
9. Install transmission wiring harness clip (3, Fig. 3) on lower stud of transmission housing and fasten with nut. Torque nut to 20-25 N.m (15-18 lb.-ft.).
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 of Canada has determined that a defect which relates to motor vehicle safety exists on certain 1990 DK 10-30 model trucks equipped with 6.2L diesel engines. The fuel feed and/or return lines of these vehicles can contact the automatic transmission shift linkage cordon shaft and/or, of K models, the front propshaft. If this contact occurs, a hole could be rubbed through the fuel line and a diesel fuel leak may occur near the exhaust crossover pipe. A fuel leak of this type may result in an engine compartment fire.
To prevent this condition from occurring, your GM dealer will install a new design fuel line routing bracket. Additionally, the fuel lines will be inspected for wear, and if necessary, replaced. This service will be performed for you at no charge.
Please contact your GM dealer as soon as possible to arrange a 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.
Further assistance, if required, may be obtained from our Customer Assistance Centre, toll free, by calling 1-800-263-3777, or if you live in Quebec, 1-800-263-7854.
We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.
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.
