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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.6L (LLT) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LLT) >> Installation Procedure

Installation Procedure

    Fig 1: Rebuilt Direct Fuel Injectors - Bank 2 (LLT)
    GM1977754Courtesy of GENERAL MOTORS COMPANY
  1. Install the rebuilt direct fuel injectors (1) to the cylinder heads. Refer to Fuel Rail and Injectors Cleaning and Inspection .
  2. Install new direct injector hold down clamps to the injectors.
    3. Fig 2: Fuel Rail & Bolts - Bank 2 (LLT)
    GM1977744Courtesy of GENERAL MOTORS COMPANY
  3. On the new fuel rail, lubricate the fuel injector cups with silicon free engine oil. Refer to Adhesives, Fluids, Lubricants, and Sealers
  4. Carefully place the fuel rail (2) into position, placing the front into the fuel rail over the front injector and rotating the rear downward.
  5. Install the 2 outer fuel rail bolts first, then the 2 inner bolts and hand tighten.
    6. Fig 3: Fuel Rail Bolt Tightening Sequence - Bank 2 (LLT)
    GM1977774Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  6. Tighten the fuel rail bolts in the sequence shown:
    1. Tighten the Bank 2 fuel injection fuel rail bolts first pass to 12 N.m (106 lb in).
    2. Tighten the Bank 2 fuel injection fuel rail bolts a final pass to 23 N.m (17 lb ft).
  7. Install Fuel Injection Fuel Rail - Bank 1 - Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LLT) 
  8. Install a NEW fuel rail crossover tube. Refer to Fuel Injection Fuel Rail Crossover Tube Replacement (LLT) .
  9. Install a NEW high pressure fuel pipe. Refer to Fuel Feed Intermediate Pipe Replacement (LLT) .
    10. Fig 4: Fuel Pressure Sensor & Fuel Injection Fuel Rail - Bank 2 (LLT)
    GM1977753Courtesy of GENERAL MOTORS COMPANY
  10. Install the high pressure fuel sensor. Refer to Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail .
  11. Connect the fuel injector wiring harness electrical connector (1) from the fuel injectors, fuel rail and fuel pressure sensor.
  12. Inspect for fuel leaks using the following procedure:
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition, for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
  13. Install the fuel pipe shield. Refer to Fuel Pipe Shield Replacement .
  14. Install the low side fuel pressure service port cap.
  15. Install the fuel tank cap.
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