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 Module (4/83) [2017-2022]: Description
The fuel pump module controls the fuel pump. The relayed power of the fuel pump module is controlled by the Central Electronic Module (CEM) when requested by the Engine Control Module (ECM).
The power supplied to the fuel pump is proportional to the 12 V PWM control signal from the Engine Control Module (ECM). The typical frequency of the PWM output signal to the fuel pump is 16 kHz ± 1 %.
The conversion from the PWM signal to the mechanical output of the pump has a linear range between a duty cycle of 18 % and about 1300 r/min to a duty cycle of 77 % and about 7100 r/min.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.