C 2500 Suburban 2WD V8-6.0L VIN U (2002)
Tighten
Tighten the battery negative terminal bolt to 16 N.m (12 lb ft).
Retest the vehicle. If there is still a difficult to fill condition, continue with the following procedure. To perform this repair, you will need the
following locally obtained items.
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A 152 mm (6 in) long, 3.175 mm (1/8 inch) drill bit.
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A 609 mm (24 in) long piece of fuel hose, 9/32 or smaller, marked at 457.2 mm (18 in) and 482.6 mm (19 in) locations (Test hose).
Caution:
Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel
fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.
1.
Disconnect the negative battery cable. Refer to the Battery Negative Cable Disconnect/Connect procedure.
2.
Loosen the fuel filler cap in order to relieve the fuel tank vapor pressure.
3.
Raise the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Information.
4.
Clean all the fuel pipe and hose connections and the surrounding areas before disconnecting in order to avoid possible contamination of the fuel
system.
5.
Loosen the fuel fill hose clamp (10) at the fuel fill pipe.
6.
Disconnect the fuel fill hose and the hose clamps (10) from the fuel fill pipe.
7.
Loosen the fuel vapor hose clamp (9) at the fill pipe.
8.
Disconnect the fuel vapor hose and hose clamp (9) from the fuel fill pipe.
9.
Disconnect the rear axle vent hose retainer from the fuel fill pipe bracket.
10.
Remove the fuel filler neck to body ground strap bolt from the frame.
11.
Lower the vehicle enough to gain access to the fuel filler door area.
12.
Remove the fuel filler cap from the fuel fill tube.
13.
Remove the three 7 mm (0.28 in) screws that retain the fuel filler neck to the retaining pocket in the body panel.
14.
Remove the filler neck from the vehicle.
15.
Place the tab on the filler neck, where the rear axle vent tube was fastened, firmly in the jaws of a vise.
