2001 Chevy Silverado P0452 after Fuel Pump Replacement

Tiny
HIHOSILVERADO
  • 2001 CHEVROLET SILVERADO

Electrical problem
2001 Chevy Silverado V8 Two Wheel Drive Automatic 104K miles

A couple of days after replacing the fuel pump in my Silverado 1500, the service light came on and I checked/cleared code P0452 evap sensor low. It came right back on about two minutes after starting the engine. I suspect it is one of these two things: (1) bad wiring connection
(2) bad sensor in new pump. I tend to think it more likely 1 than 2. Any other causes I need to check out?

Thanks!

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Friday, April 10th, 2009 AT 6:27 PM

1 Reply

Tiny
JONNYQUES
  • MEMBER

Hi did you find a solution to this problem?
I have the exact situation. Brand new pump and now the error. The shop said a new wire harness came with the pump and it was installed.
Thanks

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Friday, October 2nd, 2009 AT 8:23 AM

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