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Thread: No Stat After Refueling - Need EVAP System Clarification

  1. #1
    Dr.LOLenstien is offline Cadillac Owners Member
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    No Stat After Refueling - Need EVAP System Clarification

    Afternoon, gentlemen.

    The car in question is an 05 CTS 3.6L V6, the complaint is that the vehicle refuses to start after refueling. Car has P0456 / P0451 trouble codes if my memory serves me correctly.

    When looking for online instructions and parts I saw that there are both a evap control solenoid and a canister vent valve. I suspect the canister vent valve to be attached to the canister itself, which I believe to be located right atop the rear differential. The purge solenoid I believe to be located on the passenger side rear of the engine. Can anyone confirm that I am indeed correct?

    I was able to find the following PDF, describing how to R&R the solenoid valve: http://ww2.justanswer.com/uploads/TR...174417_223.pdf

    However, I was unable to find anything to do with the canister vent valve. Anyone have additional information? I suspect it's held in there by a single bolt and an o-ring, but I just want to make sure.

    Also, if anyone knows specifically which part is at fault, I would rather not replace both unnecessarily unless I have to. I suspect CP480 more than the 15788844 (canister vent valve).

    Any and all information is appreciated, thanks.

    Just to clarify, are these two the correct parts? (Part #15788844 and CP480)

    2768-06015687-1015542.jpg
    CP480.jpg


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  3. #2
    Kingoftypos is online now Cadillac Owners Master
    Automobile(s): 06 CTS Sport/Luxury package
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    A majority of these no starts after refuel is the purge value solenoid located on top of the passenger side engine.

    $30 to $50 at the dealer for the part. 10 minute job for a DIY. One bolt, two tubes and one electrical connection.

    KOT

  4. #3
    Dr.LOLenstien is offline Cadillac Owners Member
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    Re: No Stat After Refueling - Need EVAP System Clarification

    Much appreciated.

  5. #4
    Dr.LOLenstien is offline Cadillac Owners Member
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    Re: No Stat After Refueling - Need EVAP System Clarification

    Any info on the rest of my questions?

  6. #5
    TF Eftusk is offline Cadillac Owners Member
    Automobile(s): '05 CTS 3.6l
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    Re: No Stat After Refueling - Need EVAP System Clarification

    Hi, this is my first post. I just bought a used 05 CTS with various issues. I too have the purge valve code in my computer and it wont start after refueling. I have not replaced the part yet.

    No idea about a canister vent valve. I will repost after I replace the purge valve and see if it starts better after refueling.


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