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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 251 (Engine Controls - Removal & Installation) >> Fuel Systems (CNG) >> Fill Valve-To-Union Fill Line >> Removal

Fill Valve-To-Union Fill Line: Removal

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The numbers in parenthesis correspond to numbered components in referenced illustrations.
  1. Relieve the CNG fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE (CNG) .
  2. Disconnect the negative battery cable.
  3. Remove the fuel tank cover. See Figure.
  4. Remove the trunk trim panel.
  5. Remove the cargo net, the cargo net knobs and the left wheelhouse carpet.
  6. Loosen the fill valve boot clamp and peel back the boot. See Figure.
  7. Disconnect the fill line (3) at the fill valve (5). See Figure.
  8. Loosen the clamp at the tank vent boot and peel back the boot to expose the union. See Fig 1.
  9. Disconnect the fill line at the union.
  10. Remove the fill line from the vehicle.
Fig 1: Accessing Fill Line Union
G00217319Courtesy of GENERAL MOTORS CORP.
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