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Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1136 (Engine Controls - 6.0L - Alternative Fuels (Introduction)) >> Repair Instructions >> Fill Valve Replacement >> Installation Procedure
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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: Locating Fill Valve Mounting Nut
    GM762870Courtesy of GENERAL MOTORS CORP.
  1. Install the fill valve (2) into the mounting plate (1).
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the fill valve nut (3).

    Tighten:  Tighten the nut to 41 N.m (30 lb ft).

    3. Fig 2: Identifying Mounting Plate Bolts
    GM762852Courtesy of GENERAL MOTORS CORP.
  3. Install the mounting plate (2) to the fill housing with the attaching bolts (4).

    Tighten:  Tighten the bolts to 8 N.m (6 lb in).

    4. Fig 3: Identifying Fill Line and Fill Valve
    GM757005Courtesy of GENERAL MOTORS CORP.
  4. Connect the fill line (3) to the fill valve (2) 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. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  5. 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.
  6. Start the vehicle and inspect for CNG fuel leaks at the serviced fitting using the J 45878  or an equivalent liquid leak detector. See Special Tools and Equipment .
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