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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (Engine Controls - 6.0L - Alternative Fuels (Introduction)) >> Repair Instructions >> Fill Line Replacement (Cab/Chassis) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Fuel Line Hold-Down Components
    GM1203079Courtesy of GENERAL MOTORS CORP.
  1. Install the fill line into the vehicle.
  2. Install the fuel line retaining clips (1).
    3. CAUTION: Refer to Compressed Natural Gas (CNG) O-Ring Caution in Cautions and Notices.
    Fig 2: Viewing Fill Line At Fill Valve
    GM296366Courtesy of GENERAL MOTORS CORP.
  3. Connect the fill line (3) to the fill valve (1) with a new O-ring face seal. Lubricate the O-ring with petroleum jelly.

    Tighten:  Tighten the fitting to 37 N.m (27 lb ft).

    4. Fig 3: Locating HPL Fuel Lines
    GM1203083Courtesy of GENERAL MOTORS CORP.
  4. Connect the fill line (1) to the HPL with a new O-ring face seal. Lubricate the O-ring with petroleum jelly.

    Tighten:  Tighten the fitting to 37 N.m (27 lb ft).

    5. Fig 4: Identifying Fuel Line Hold-Down Components
    GM1203079Courtesy of GENERAL MOTORS CORP.
  5. Install the check valve mounting bolt (4).

    Tighten:  Tighten the bolt to 12 N.m (9 lb ft).

    6. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  6. Install the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical in the C/K Pickup service manual.
  7. Start the vehicle and inspect for CNG fuel leaks at the serviced fittings using the J 45878  or an equivalent liquid leak detector. See Special Tools and Equipment .
  8. Install the truck body as required on ZW9 equipped vehicles.
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