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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 INJECTION FUEL RAIL ASSEMBLY REPLACEMENTINSTALLATION PROCEDURE
2008 Pontiac Grand Prix Base

Installation Procedure

2008 Pontiac Grand Prix BaseSECTION Installation 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: Do not reuse the fuel injector O-ring seals. Install NEW O-ring seals during assembly.
    Fig 1: View Of Fuel Rail Ground Strap
    GM1411903Courtesy of GENERAL MOTORS CORP.
  1. Note the installed location of the fuel rail ground strap (557).
    2. Fig 2: View Of Fuel Rail Bolts, Ground Strap & Manifold Bolts
    GM1411905Courtesy of GENERAL MOTORS CORP.
  2. If replacing the fuel rail, install the fuel injectors. Refer to Fuel Injector Replacement .
  3. If necessary, Lubricate the NEW O-ring seals with clean engine oil.
  4. If necessary, install NEW O-ring seals to the fuel injectors.
  5. Install the fuel rail (510) with injectors. Push firmly on both sides of the rail until all the injectors have been seated into their bores.
  6. Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the fuel rail bolts.
    7. NOTE: Refer to Fastener Notice .
  7. Install the fuel rail bolts (511).

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

  8. Install the ground strap (557) and intake manifold bolt (512).

    Tighten:  Tighten the bolt to 10 N.m (89 lb in).

    9. Fig 3: View Of Fuel Feed Line & Evaporative Emission (EVAP) Line
    GM1551868Courtesy of GENERAL MOTORS CORP.
  9. Connect the fuel feed (1) and EVAP (2) lines. Refer to Metal Collar Quick Connect Fitting Service  and Plastic Collar Quick Connect Fitting Service .
    10. Fig 4: View Of Engine Wiring Harness & Retainers
    GM1551869Courtesy of GENERAL MOTORS CORP.
  10. Position the harness to the engine. Install the engine wiring harness retainers to the tabs on the fuel rail.
    11. Fig 5: View Of Ignition Coil Main Electrical Connectors
    GM1551871Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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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.