Question about 2006 Cadillac CTS

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Trouble starting only after refueling

I have a '06 CTS with the 2.8 V6. I currently have 69,000 miles on the car. The check engine light came on while I was waiting in traffic with no noticable engine problem. I called on-star for a diganosis of the problem. They informed me that I had a evap. problem. Keep in mind that the ONLY time that I have a problem is after I fuel the car. If I remove the cap without fueling, I have no problem starting the car. I am not topping off the tank when fueling either. I have replaced the gas cap with no success. This one has me confussed!

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  • f_schreier Feb 15, 2009

    Nope, I always turn the car off when fueling.

  • Anonymous Mar 07, 2009

    i have the same problem, 06 CTS, 2.8 V6



    pulled in my driveway, shut the car off, about 2 hours later hopped in, started car, and engine light comes on, checked the gas cap, wasnt it



    what do you think?

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Same problem 06 CTS...you probably hear a ticking noise under the hood, and car will not start after re-fueling- check engine code is like a p0442? which is a leak in the fuel system. you can try buying a new gas cap from cadillac or an ac-delco distributor to start. its only about twenty dollars. disconnect battery for about ten minutes to reset check engine light or find a local shop with an obd-2 scanner to reset light and re-diagnose. If check engine light comes back on with same code replace the evap. purge valve.(about $25) it is located on the passenger side of car on the intake manifold. it has one electrical connector and two hoses connected to it. no tools required to change which is a plus! disconnect battery or find local shop to reset light again. this should take care of the problem!!

Posted on Oct 11, 2009

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Do either of you have a diagram of what this part looks like. Seems reasonable I can do it myself, and was just quoted $125 to fix.

Posted on Sep 13, 2010

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This may be way off .. but I had a similar problem and it was because the following reason(s) - after speaking to a GM tech.

1) Leaving the car running while fueling
2) Leaving the car running and the A/C running while fueling

I stopped doing both and the problem stopped.


Posted on Feb 15, 2009

  • alivio714 Sep 29, 2010

    just had this problem in my 2006 CTS. the fix for it is to replace the vapor canister purge valve ADELCO p/n 2141685 = cadillac dealar p/n 12611801. if this does not fix it, then there is a recall on the vapor canister purge soleniod. the soleniod was changed on my car back on 2008 but recently sept 2010, replacing the valve p/n 2141685 fix it. Replacing the valve is very easy and it should take no more than 10 minutes. pop off the engine plastic cover and disconnect the valve then replace it with new one.

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