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2004 Chevrolet Silverado Fuel pump

Tiny
MAYBERRY73
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
I replaced the fuel pump on this truck a few weeks ago a precision pump. Prior to that, the previous owner replaced it also a yr ago with an ac delco pump. Which went bad as well. It is now doing the same thing. It's like the fuel is not getting through. I can flip the key switch back and forth a few times, then it will crank or I can tap the fuel tank. Now neither of those are helping. Could it possibly be something different or the fuel pump again?

Thank you
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Thursday, September 24th, 2015 AT 11:14 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Probably just another bad pump. Don't use anything but Delco.

You need to check the harness plug real good. They have a history of having poor connections there. Most of the pumps come with a replacement plug pigtail now. Make sure the contacts are good and tight.
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Thursday, September 24th, 2015 AT 11:47 AM
Tiny
MAYBERRY73
  • MEMBER
  • 2 POSTS
Ok thanks. I know the fuel pump has been replaced 3 times in the last 2 years. Two of them were Delco. So, I was thinking it may be something else. I will get it checked. Thanks again
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Thursday, September 24th, 2015 AT 12:29 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
1) Make sure the inside of the tank is clean

2) Never run the tank below 1/4. That is a sure way to burn out the pump.
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Thursday, September 24th, 2015 AT 12:37 PM

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