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Removal (Envoy XL & Trailblazer EXT)

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Relieve the fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE .
  2. Drain the fuel tank. See FUEL TANK DRAINING .
  3. Remove the frame brace.
  4. Remove the fuel tank shield, if equipped.
  5. Loosen the fuel hose clamp (1) at the fuel tank. See Figure.
  6. Separate the fuel hose (2) from the fuel tank.
  7. Disconnect the fuel tank pressure sensor electrical connector (3). See Figure.
  8. Disconnect the evaporative emission (EVAP) vent valve electrical connector (2).
  9. Disconnect the fuel feed, return and EVAP pipes. See FUEL LINE DISCONNECT FITTINGS (5.3L) .
  10. Cap the fuel and EVAP pipes in order to prevent possible fuel system contamination.
  11. With the aid of an assistant, support the fuel tank.
  12. Remove the fuel tank strap bolts (1). See Figure.
    NOTE: Do not bend the fuel tank straps. Bending the fuel tank straps may damage the straps.
  13. Remove the fuel tank straps (2).
  14. Carefully lower the fuel tank.
  15. Disconnect the fuel sender electrical connector (1). See Figure.
  16. Remove the fuel tank.
  17. Place the fuel tank in a suitable work area.
  18. If the fuel tank is not being replaced, go to the installation procedure. See INSTALLATION .
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