p0231 after dual walbros

[miguelc]

Greetings

I just wired two walbros to the stock power line. It shows the code even I select no error reported and dissabled the code U0109

do you have any idea what I could do? maibe a resistor?

[DSteck]

Is this a 2010 Camaro? Those Walbros aren't compatible with the FPCM. If you're going to use those, you need to convert to return style and eliminate the FPCM.

[miguelc]

no, it is a 2011 sierra. Is there any trick to stop the check engine light?

[skalor]

I'm interested in this as well as we have the same problem on my friend's 2010 Sierra with dual walbros. I don't know anything about FPCMs or if his truck even has one but it seems to work. Well, it's been like that since August and no problems besides the code.

[ProTools4]

Is this a proper recipie:

-Billet fuel rails
-Adj return style Fuel pressure regulator
-Aftermarket pump pump *dueal 255s or sinlge 400 Walbro
-relayed Fuel pump wiring
-unplug the FPCM to prevent DTC from the FPCM being reported to the VCM

[vette_c6]

same thing happened to me yester ,,
car was leaning up
changed fuel pump for the Car ,,
Fuel was good ( not perfect )

swapped the Sierra 4.8 Fuel pump with BBK internal fuel pump
for 6.0 engine

and same thing ! check engine sign came in ,, same code ! didnt disappear :!

any clue ?

[IDRIVEAG8GT]

same thing happened to me yester ,,
car was leaning up
changed fuel pump for the Car ,,
Fuel was good ( not perfect )

swapped the Sierra 4.8 Fuel pump with BBK internal fuel pump
for 6.0 engine

and same thing ! check engine sign came in ,, same code ! didnt disappear :!

any clue ?

FPCM is a little bastard. There are things you can change though so far as commanded fuel pressure and what not, but still.

[vette_c6]

i guess we have to live with it :<