Installation Procedure

2025 Chevrolet Trailblazer ACTIV, 4WDSECTION Installation Procedure
  1. GM5278856Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump Seal (2) @ Fuel Tank Fuel Pump Module - Install NEW

  2. Fuel Tank Fuel Pump Module (1) @ Fuel Tank - Install
  3. GM5278855Courtesy of GENERAL MOTORS COMPANY

    Fuel Sender Hose Fitting (2) @ Fuel Tank Fuel Pump Module - Connect - Plastic Collar Quick Connect Fitting Service 

  4. Fuel Level Sensor Connector (1) @ Fuel Tank Fuel Pump Module - Connect
  5. GM5278854Courtesy of GENERAL MOTORS COMPANY

    Fuel Sender Retainer (1) @ Fuel Tank - Install

    Use the CH-45747  fuel sender lock ring wrench to install the fuel sender retainer.

  6. GM5278853Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Pipe-Fuel Tank (2) @ Fuel Tank Fuel Pump Module - Connect - Plastic Collar Quick Connect Fitting Service 

  7. Electrical Connector (1) @ Fuel Tank Fuel Pump Module - Connect
  8. Fuel Tank - Install - Fuel Tank Replacement (AWD) 
RENDER: 1.0x

NO RELATED

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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.