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HOMESERVICE MANUALSCHEVROLET2007SUBURBAN C1500, 5.3 0REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 121 (ENGINE CONTROLS - REMOVAL & INSTALLATION - FLEX FUEL & GASOLINE)FUEL SYSTEMSFUEL LINE REPLACEMENT (PICKUP)INSTALLATION PROCEDURE
2007 Chevrolet Suburban C1500, 5.3 0

Installation Procedure

2007 Chevrolet Suburban C1500, 5.3 0SECTION Installation Procedure
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the fuel feed, EVAP, and return pipe assembly.
    NOTE: See FASTENER NOTICE .
    2. Fig 1: Fuel Feed, Evap, And Return Pipe Assembly Nuts (Crew or Extended Cab)
    G00576095Courtesy of GENERAL MOTORS CORP.
  2. If vehicle is a crew or extended cab, install the fuel feed, EVAP, and return pipe assembly nuts.

    Tighten 

    Tighten the nuts to 12 N.m (106 lb in).

    3. Fig 2: Fuel Feed, Evap, And Return Pipe Assembly Nuts (regular Cab)
    G00576094Courtesy of GENERAL MOTORS CORP.
  3. If vehicle is a regular cab, install the fuel feed, EVAP, and return pipe assembly nuts.

    Tighten 

    Tighten the nuts to 12 N.m (106 lb in).

  4. Remove the caps from the fuel pipes at the fuel tank.
    5. Fig 3: Fuel Feed And Return Pipes
    G00576093Courtesy of GENERAL MOTORS CORP.
  5. Connect the fuel feed and return pipes at the fuel tank. Refer to REMOVAL & Installation (Plastic Collar) .
  6. If equipped with 4WD, install the torsion bar bracket. Refer to TORSION BAR REPLACEMENT .
    7. Fig 4: EHCU and Bolts
    G00576092Courtesy of GENERAL MOTORS CORP.
  7. Install the EHCU (1).
  8. Install the bolts (4) attaching the EHCU bracket to the frame (5).

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

    9. Fig 5: Electro-Hydraulic Control Unit (EHCU)
    G00576091Courtesy of GENERAL MOTORS CORP.
  9. Connect the brake lines to the BPMV.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

  10. Connect the chassis electrical harness connectors to the EBCM.
    11. Fig 6: Fuel Hose/Pipe Clip
    G00576090Courtesy of GENERAL MOTORS CORP.
  11. Install the EVAP canister. Refer to EVAP CANISTER .
  12. Install the transfer case harness to the clip bracket.
  13. Install the clip to the bracket on the frame.
  14. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  15. Install the fuel hose/pipe clip to the bracket on the automatic transmission.
    16. Fig 7: Fuel Feed And Return Pipes, Nuts and (EVAP) Canister Purge Tube
    G00576089Courtesy of GENERAL MOTORS CORP.
  16. Install the HO2S sensor connector to the bracket.
  17. Install the fuel pipe bracket to the bellhousing stud.
  18. Install the fuel pipe bracket nut (2).

    Tighten 

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

  19. Lower the vehicle.
  20. Remove the caps from the fuel rail and EVAP pipes.
  21. Connect the EVAP canister purge tube (3).
  22. Connect the fuel feed and return pipes (1) at the fuel rail. Refer to REMOVAL & Installation (Metal Collar) .
  23. Install the fuel fill cap.
  24. Connect the negative battery cable.
  25. Use the following procedure in order to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for fuel leaks.
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.