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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 434 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 5.3L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL TANK REPLACEMENTREMOVAL PROCEDURE
2008 Pontiac Grand Prix Base

Removal Procedure

2008 Pontiac Grand Prix BaseSECTION Removal Procedure
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.
    Fig 1: View Of Fuel Tank Fill Hose
    GM1554559Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief (With CH 48027) or Fuel Pressure Relief (Without CH 48027) .
  2. Drain the fuel tank. Refer to Fuel Tank Draining .
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Loosen the fuel fill hose clamp (1) at the fuel tank.
  5. Remove the fuel tank fill hose (2) from the fuel tank (3).
  6. Disconnect the EVAP vent pipe quick connect fitting from the fill pipe EVAP vent pipe quick connect fitting. Refer to Plastic Collar Quick Connect Fitting Service .
    7. Fig 2: Disconnecting/Connecting EVAP Canister Vent Solenoid Valve To EVAP Emission Canister Hose
    GM1618911Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the EVAP vent solenoid hose on the tank from the vent valve solenoid hose.
    8. Fig 3: View Of Fuel Feed, EVAP & Fuel Tank Lines
    GM1554561Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the fuel feed (3), and the EVAP (4) lines from the fuel tank lines (1, 2). Refer to Plastic Collar Quick Connect Fitting Service .
  9. Support the exhaust system.
  10. Remove the rubber exhaust pipe hangers in order to allow the exhaust system to drop slightly.
    11. Fig 4: View Of Fuel Tank Shield
    GM1554563Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel tank shield retainers (3).
  12. Remove the fuel tank shield (2).
    13. Fig 5: View Of Fuel Tank & Straps
    GM1554562Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.