K 2500 3/4 Ton Pickup 4WD V8-379 6.2L DSL VIN J FI (1982)
canister connection. Pressure may also bleed off as a result of fill cap pressure relief valve.
^
If the test indicates that pressure bleed off in a period of 1-2 minutes, the fuel tank will need to be removed and the sender unit retaining ring
welds inspected for evidence of any "lifting up" or unevenness from the tank surface. "Lifting up" or unevenness of the sender unit retaining
ring is an indication of fractured welds. Further verification of fractured welds can be made by trying to pass a "feeler gauge" through the
welds. If tank replacement is required because of fractured sender unit retaining ring welds, skip to Fuel Tank Replacement Procedure below.
^
If fuel tank pressure tests indicate that fuel tank hold pressure, go to step 7.
7.
Reconnect fuel vapor line. If fuel was removed from fuel tank in step 1 of service procedure, refill tank to previous level with fuel that was
drained.
8.
Reconnect negative battery cable and reset all electronic devices as noted in step 2.
9.
Install a Campaign Identification Label.
Fuel Tank Replacement Procedure
1.
Drain remaining fuel from fuel tank following procedure in section 6C of appropriate service manual.
2.
Disconnect clamps connecting fuel filler neck hose and vent line to fuel tank.
3.
While supporting fuel tank, remove fuel tank retaining straps.
4.
Disconnect fuel tank sending unit wires, hoses and ground strap from fuel tank. Tank will need to be lowered to gain access.
5.
Remove fuel tank from vehicle.
6.
Loosen sending unit tank locking cam using Kent-Moore tool J36608 or equivalent and remove fuel sending unit assembly from fuel tank. This
procedure is described in detail in section 6C of appropriate service manual.
7.
Install fuel tank sender unit into the replacement fuel tank.
^
Inspect and replace sending unit gasket if necessary.
^
Tighten sending unit locking cam using Kent-Moore tool J36608 or equivalent.
8.
While supporting fuel tank, install fuel tank sending unit wires, hoses and the ground straps.
9.
Reconnect the existing fuel tank filler neck hose and the vent pipe to the fuel tank using existing fasteners removed in step 4.
10.
Using existing fuel tank anti-squeak strips, install existing fuel tank retaining straps with existing hardware. Torque bolts or nuts as follows:
^
Base Tank Nuts - 6 Nm (48 lb. in.)
^
Auxiliary Tank Bolts (If Applicable) - 33 Nm (24 lb. ft.)
11.
Reconnect fuel vapor line. Refuel fuel tank with gas removed in step 1 of this procedure.
12.
Reconnect negative battery cable and reset all electronic devices as noted in tank inspection procedure (step 2).
13.
Install Campaign Identification Label.
Campaign I.D. 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 the 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. When installing the new Campaign Identification Label, be sure to install the clear protective covering. Additional
Campaign Identification Labels can be obtained from VISPAC Incorporated by calling 1-800-269-5100 (Monday-Friday 8:00 a.m. to 4:30 p.m. EST).
Ask for Item Number S-1015 when ordering.
Apply "Campaign Identification Label" only on a clean, dry surface.
Claim Information
CHEVROLET INFORMATION
