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Fuel light turns on and off

Tiny
GENAROSILVAS40
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 75,000 MILES
Has anyone experienced driving their vehicle and the fuel light turns on, then immediately turns off? When the light turns off it reads the fuel level accurately, but when it turns on the fuel gauge drops to empty. It turns on and off sporadically when I go over bumps and potholes, but also when driving normally. Any help in identifying the culprit and how I can fix it is much appreciated!
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Thursday, July 29th, 2021 AT 11:42 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

As far as your issue, I would check the connector on top of the tank where the fuel module is connected. It may be just a bad connection.

If the connection is good, it may be the sender unit itself in the tank. That will require the replacement of the fuel pump module.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

I attached the procedure below for you.

Roy
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Friday, July 30th, 2021 AT 3:05 AM
Tiny
GENAROSILVAS40
  • MEMBER
  • 2 POSTS
Thanks Roy! Will take a look at the connection, tank and sending unit this weekend!

Very Respectfully,
G. Silvas
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Friday, July 30th, 2021 AT 12:12 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Friday, July 30th, 2021 AT 2:18 PM

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