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hello all, I return to you to tell you that my problem is solved. it was the fuel vapor pressure sensor located on the fuel pump in the tank that was breaking. the pressure sensor does not give the info to pcm. suddenly the pcm could not say the purge solenoid opens to. thank you to you for...

sorry I wrote too fast. I said, after testing you m have said, everything works fine, but the engine light always comes back. is what the problem could come from the fuel pressure sensor or fuel pump ???? best regards shaft

hello, I have returned after you test the entire system and everything works fine. is what it could be from the fuel preesion sensor or pump caurburant it has even ??? thank you to you best regards shaft

ok thank you I'm going to check again and I will keep you posted. thank you very much for your help best regards shaft

the problem is that I have to change everything and that failure is always present. I do not know what to look for to find the fault.

thank you for having responded to the pcm that it must be reprogrammed, it is not already programmed to buy ???? tension was tested 13.8v valve and solenoid.the circuit has been tested open, and it works fine. the solenoid draws well, even the engine running light.

hello all, my 05 tahoe has an engine light p0446. the purge solenoid, the canister, the solenoid on admission, pipe and tank cap were changed, but the light always comes back after a week. any of you can help me resourare this problem somewhat disquieting :sad72::sad72::sad72:???? thank you...

Hello I present shaft 30, I'm in France and I own a 2005 tahoe. I discover your forum, so sorry if I made ​​any mistake, I do not speak very good English. thank you to you best regards