Vehicles Involved, Owner Notification, Parts & Service Procedure Information

VEHICLE INVOLVED

Involved are certain 1988 S10 Pickup and Chassis Cab model trucks (except options X81 and X9H) built within the following VIN breakpoints which were sold to retail purchasers on or before November 10, 1987.

PLANT FROM THROUGH

Moraine J2100001 J2130863

Shreveport J8100001 J8125727

OWNER NOTIFICATION

Original owners of record on or before November 10, 1987 will be notified of this special policy adjustment by Chevrolet Motor Division (see copy of owner letter included with this bulletin).

PARTS INFORMATION

When required, parts are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure these parts will be obtained as soon as possible, they should be ordered from GMSPO on a "C.I.O." order with no special instruction code, but on an advise code (2).
QUANTITY/
PART NUMBER DESCRIPTION VEHICLE

15602846 Fuel Tank 1

25092693 Sender/Fuel Meter 1

6260631 Insulator 1


SERVICE PROCEDURE

NOTICE: Intank electric fuel pump will be reused, do not discard intank fuel pump.

1. Drain fuel tank. Disconnect the negative battery cable. Have a dry chemical (Class B) fire extinguisher nearby.

CAUTION: To help avoid a fire or explosion, never drain or store gasoline or diesel fuel in an open container.

Use a hand operated pump device to drain as much fuel as possible through the filler neck. On some fuel tank installations, the filler neck is too long to gain access to the fuel. If the tank is not full, disconnect filler neck hose at the fuel tank to gain access to the fuel.

Alternate method:

a. Disconnect fuel feed pipe and attach a hand operated pump device.

b. Energize the fuel pump relay.

c. With fuel pump running, operate hand pump to remove fuel.

2. Relieve fuel system pressure (2.5L Engine only).

3. Raise the vehicle on a hoist.

4. Remove fuel tank and tank shield if so equipped.

5. Remove sender unit and pump by turning the cam lock counter-clockwise using tool J-36608 or J24187 to remove fuel pump from the sending unit.

- Pull the fuel pump up into the attaching hose while pulling outward from the bottom support.
- Do not damage the rubber insulator or the strainer.
6. Install fuel pump on new sender. Install sender into new fuel tank. The new sender seal must also be used.

7. Install fuel tank. Torque mounting bolts:

Front Bolt to 5-8 N-m. (4-6 Lb.Ft.)
Rear Bolt to 30-40 N-m. (19-30 Lb.Ft.)

8. Install front tank shield and torque nut to 14-18 N-m. (11-14 Lb.Ft.). Reconnect the negative battery cable.

9. Lower Truck.

10. Refill fuel tank with fuel drained in Step 1.



WARRANTY CLAIM INFORMATION

Submit a warranty claim for credit with the information indicated below:
** The "Parts Allowance" should be the sum total of the current GMSPO Dealer, Net price plus 30% of all parts required for the repair.

*** The "Net Amount" for operation T7490 represents the list price cost of the 20 gallon fuel tank plus an adjustment incentive when reimbursement is issued.

NOTICE: Customer MUST sign and date the Option Selection Form included as part of the owner letter, (extra copies to be reproduced locally, as needed). The signed form and a copy of the check issued, if applicable, is to be attached to the dealers file copy of the request within thirty
(30) days after dealer credit is received and retained for twenty-four (24) months from date of credit.


Refer to the Chevrolet Claims Procedssing Manual for details on Claim submission.