Fuel system

Tiny
FAYTHE
  • MEMBER
  • 2015 CHEVROLET IMPALA
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 82,000 MILES
Cannot locate fuel relay switch or fuel pressure relief valve.
Tuesday, October 9th, 2018 AT 2:26 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

Can you hear the fuel pump run with the key on?

The BCM controls the action of the fuel pump. There is no relay or switch for the control.

Do you have a scan tool that can monitor the operation of the pump?

Did you check for pressure at the Schrader valve on the fuel rail?

Attached is a diagram of the fuel pump circuit.

Roy

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, October 9th, 2018 AT 3:13 PM

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