Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fuel Pump Power Control Module
The Fuel Pump Power Control Module is a serviceable GMLAN module. The Fuel Pump Power Control Module receives the desired fuel pressure message from the Engine Control Module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The Fuel Pump Power Control Module controls the pump speed by modulating current flow through each of three phases of the fuel pump to the level the ECM is commanding. A liquid fuel pressure sensor provides fuel pressure feedback to the ECM.
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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.