C 2500 Suburban 2WD V8-6.0L VIN U (2002)
Fuel Filler Hose: All Technical Service Bulletins
Fuel System - Fuel Tank Difficult to Fill
File In Section: 06 - Engine/Propulsion System
Bulletin No.: 02-06-04-012A
Date: June, 2003
TECHNICAL
Subject:
Slow, Difficult Fuel Fill, Short Fill, Fuel Gauge Inaccurate
(Replace Fuel Tank Vent)
Models:
2002 Chevrolet Avalanche, Suburban 2500 Series Models
2002 GMC Yukon XL 2500 Series Models
This bulletin is being revised to add parts and update the correction procedure.
Please discard Corporate Bulletin Number 02-06-04-012 (Section 06 - Engine/Propulsion System).
Condition
Some customers may comment that the fuel tank is difficult to fill from approximately 3/4 to full. The automatic fuel fill nozzle keeps shutting off.
Cause
Inadequate venting of the fuel tank may cause the nozzles to shut off prematurely.
Correction
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.
Turn the key to the RUN position. Does the fuel gauge display a fuel level greater than 3/4 full? If YES, go to Step 2. If NO, go to Step 3.
2.
Connect a Tech 2(R) to the vehicle ALDL connector. Observe the Fuel Level Rear on Data Stream 1. If the fuel level voltage display is less than
2.25 volts, proceed with Step 3. If not, run/drive the vehicle engine until the Fuel Level Rear voltage display drops to approximately 2.25 volts.
This would be something less than a completely full rear fuel tank.
3.
Disconnect the negative battery cable. Refer to the Battery Negative Cable Disconnect/Connect procedure.
4.
Loosen the fuel filler cap in order to relieve the fuel tank vapor pressure.
5.
Raise the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Information.
6.
Clean all the fuel pipe and hose connections and the surrounding areas before disconnecting in order to avoid possible contamination of the fuel
system.
