Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2022 >> Trailblazer L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.2L (LIH) - Repair Instructions >> Repair Instructions >> Direct Fuel Injection Fuel Rail Replacement >> Installation Procedure

Installation Procedure

  1. Clean the fuel injector bores and clean the fuel injectors, if the fuel injectors will be re-installed. Direct Fuel Injection Fuel Rail Cleaning and Inspection
  2. GM5389549Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Lubricate the fuel injector seal with engine oil.
    • Note the orientation of the fuel injector retainers when installed.

    Direct Fuel Injector (3) @ Direct Fuel Injection Fuel Rail (1) - Install [3x]

  3. Connect the electrical connector. (4) [3x]
  4. Fuel Injector Retainer (2) - Install NEW [3x]
  5. GM5389550Courtesy of GENERAL MOTORS COMPANY

    Direct Fuel Injection Fuel Rail (2) - Install

  6. Fuel Injection Fuel Rail Bolt (1) - Loosely install [4x]
  7. GM5392485Courtesy of GENERAL MOTORS COMPANY

    Retainer (2) - Connect

  8. GM5449698Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Tighten only the 2 fuel injection fuel rail bolts shown until the direct fuel injection fuel rail is seated to the cylinder head.

    Tighten the fuel injection fuel rail bolt (1) by hand 1/2 turn.

  9. Tighten the fuel injection fuel rail bolt (2) by hand 1/2 turn.
  10. Continue to tighten these two bolts by hand in 1/2 turn increments until the direct fuel injection fuel rail is seated to the cylinder head.
  11. GM5389552Courtesy of GENERAL MOTORS COMPANY

    Fuel Injection Fuel Rail Bolt (1) - Tighten in sequence [4x] 36 N.m (27 lb ft)

  12. Camshaft Cover - Install - Camshaft Cover Replacement
  13. GM5392482Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Connect

  14. GM5392490Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Intermediate Pipe - Install NEW

  15. GM5440401Courtesy of GENERAL MOTORS COMPANY

    Engine Mount Brace Head (3) - Install

  16. Engine Mount Brace Bolt (2) - Install NEW and tighten 36 N.m (27 lb ft)
  17. Engine Mount Brace Bolt (3) - Install NEW and tighten in sequence
    1. First Pass: 30 N.m (22 lb ft)
    2. Final Pass: 60-75 degrees
  18. GM5392502Courtesy of GENERAL MOTORS COMPANY

    Ignition Coil - Install

  19. GM5392588Courtesy of GENERAL MOTORS COMPANY

    Positive Crankcase Ventilation Oil Separator Hose - Install

  20. Charge Air Cooler Inlet Air Hose - Install - Charge Air Cooler Inlet Air Hose Replacement 
  21. Air Cleaner Assembly - Install - Air Cleaner Assembly Replacement 
  22. GM5392587Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Cover - Install

  23. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  24. 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.