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Home › Chevrolet › 2022 › Trailblazer L › Repair and Diagnosis › Engine Performance › System › Engine Controls And Fuel - 1.2L (LIH) - Repair Instructions › Repair Instructions › Fuel Pump Replacement › Installation Procedure

Installation Procedure

  1. GM5392499Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump Housing Seal (1) - Install NEW

    2. NOTE:

    The fuel pump flange must be fully seated to the cylinder head.

  2. Fuel Pump (2) - Install
    3. CAUTION:

    Alternately hand-tighten the fuel pump bolts one turn at a time until the pump is fully seated. Trying to draw down the pump without even side-to-side tightening may result in pump plunger damage.

    CAUTION:

    Fastener Caution

  3. Fuel Pump Bolt (3) - Install and tighten [2x] 36 N.m (27 lb ft)
  4. GM5392497Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Fuel Pump (2) - Connect

  5. GM5392490Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Intermediate Pipe - Install

  6. GM5392496Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump Cover - Install

  7. Charge Air Cooler Inlet Air Hose - Install - Charge Air Cooler Inlet Air Hose Replacement 
  8. GM5390620Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Front Pipe - Install

  9. 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.
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