2013 Chevy Silverado with 5.3L Fuel Pressure Regulator; trouble code P0004

[Dave DePriest]

Had a P0004 code and think it is Fuel Pressure Regulator.  Can’t find the dang thing.  All other images and videos are for older models.  Any help?

[CamGTP]

It doesn't really have one in a sense. The regulator is built into the fuel pump, it's all one unit.

 

So it's either a problem with the whole unit itself or a wiring issue.

[dna9656]

Well Cam, that would explain why he can't find it......

[newdude]

20 hours ago, Dave DePriest said:

Had a P0004 code and think it is Fuel Pressure Regulator.  Can’t find the dang thing.  All other images and videos are for older models.  Any help?

 

 

Would be a part of the fuel pump in the tank.

 

That said, are you SURE that code is what you found?  Because it's not in the GM service manual at all.  

 

Also, 5.3 this generation truck uses a fuel pump flow control module and those are notorious for failing.  

Edited May 16, 2022 by newdude

[Dave DePriest]

So i dont have the fanciest obd reader and that’s what came up…. Of course now i’ll run it again…. There was no check engine light but i plugged in just to check…. And if its part of the fuel pump in the tank, that likely ends my diy fix… crap…. Thank you for the response