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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 238 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 5.3L, 6.0L, 6.2L - REPAIR INSTRUCTIONS)REPAIR INSTRUCTIONSFUEL INJECTION FUEL RAIL ASSEMBLY REPLACEMENTREMOVAL PROCEDURE
2009 Chevrolet Tahoe Base, 4.8 C

Removal Procedure

2009 Chevrolet Tahoe Base, 4.8 CSECTION Removal Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 GMC Yukon XL, 2010 GMC Yukon, 2010 Chevrolet Tahoe, 2010 Chevrolet Suburban, and 2010 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: An 8-digit identification number is located on the fuel rail. Refer to this identification number when servicing or when part replacement is required.
    Fig 1: View Of Engine Harness Retainer Nut & Electrical Connectors
    GM1696891Courtesy of GENERAL MOTORS CORP.
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (CH-48027)  or Fuel Pressure Relief (Without CH-48027) .
  3. Remove the engine wiring harness bracket nut (1).
  4. Disconnect the engine wiring harness electrical connector (2) from the evaporative emission (EVAP) purge solenoid.
  5. Disconnect the engine wiring harness electrical connector (3) from the generator.
  6. Disconnect the engine wiring harness electrical connector (4) from the manifold absolute pressure (MAP) sensor.
    7. Fig 2: View Of CPA Retainer, Electrical Connectors & Engine Harness Clips
    GM1696892Courtesy of GENERAL MOTORS CORP.
  7. Remove the connector position assurance (CPA) retainer (2).
  8. Disconnect the engine wiring harness electrical connector (1) from the ignition coil main electrical connector.
  9. Disconnect the engine wiring harness electrical connectors (3) from the fuel injectors, perform the following:
    1. Mark the connectors to their corresponding injectors to ensure correct reassembly.
    2. Pull the CPA retainer on the connector up 1 click.
    3. Push the tab on the connector in.
    4. Disconnect the fuel injector electrical connector.
    10. Fig 3: View Of CPA Retainer, Engine Harness Electrical Connectors & Harness Clips
    GM1696893Courtesy of GENERAL MOTORS CORP.
  10. Remove the CPA retainer (2).
  11. Disconnect the engine wiring harness electrical connector (1) from the ignition coil main electrical connector.
  12. Disconnect the engine wiring harness electrical connector (3) from the electronic throttle control.
  13. Disconnect the engine wiring harness electrical connectors (7) from the fuel injectors, perform the following:
    1. Mark the connectors to their corresponding injectors to ensure correct reassembly.
    2. Pull the CPA retainer on the connector up 1 click.
    3. Push the tab on the connector in.
    4. Disconnect the fuel injector electrical connector.
  14. Remove the engine wiring harness clip (4) from the generator battery jumper cable.
  15. Remove the engine wiring harness clip (6) from the ignition coil bracket stud.
    16. Fig 4: View Of Battery Cable Terminals & Stud
    GM1699543Courtesy of GENERAL MOTORS CORP.
  16. Remove the negative battery cable stud (1) from the right cylinder head.
  17. Remove the negative battery cable terminal (2) and engine wiring harness ground terminal (3) from the cylinder head.
    18. Fig 5: View Of Engine Wiring Harness, Clip, Bolt & Connector
    GM1696914Courtesy of GENERAL MOTORS CORP.
  18. Remove the engine wiring harness clip bolt (3) from the generator bracket.
  19. Gather the branches of the engine wiring harness and reposition the aside.
    20. Fig 6: View Of PCV Hose
    GM1696791Courtesy of GENERAL MOTORS CORP.
  20. Remove the positive crankcase ventilation (PCV) hose.
    21. Fig 7: View Of EVAP Canister Purge Tube & Quick Connect Fitting
    GM1696917Courtesy of GENERAL MOTORS CORP.
  21. Disconnect the chassis fuel feed pipe (2) quick connect fitting from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
    22. Fig 8: View Of EVAP Tube & Purge Solenoid
    GM1697062Courtesy of GENERAL MOTORS CORP.
  22. Disconnect the EVAP tube quick connect fitting at the intake manifold. Refer to Plastic Collar Quick Connect Fitting Service .
  23. Disconnect the chassis EVAP tube quick connect fitting at the EVAP canister purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service .
  24. Disengage the retainer securing the EVAP canister purge solenoid to the fuel rail.
  25. Remove the EVAP tube and purge solenoid.
    26. Fig 9: View Of Fuel Rail & Bolts
    GM1697066Courtesy of GENERAL MOTORS CORP.
  26. Remove the fuel rail bolts.
    27. CAUTION:
    • Remove the fuel rail assembly carefully in order to prevent damage to the injector electrical connector terminals and the injector spray tips. Support the fuel rail after the fuel rail is removed in order to avoid damaging the fuel rail components.
    • Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering open pipes and passages.
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.