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DamonZ28
01-15-2012, 07:32 PM
I seem to have an evap system leak in my 2010 Impala (had Auto Zone pull the code). I replaced my gas cap already (with a factory replacement), and that didn't help (SES light went off for a couple days, but then came back on). Is there a way that I can test to find out where the leak is coming from, or do I need to have a shop do a smoke test? It's annoying that the remote start won't work when you have a simple emissions SES code.

2QuikTA
01-15-2012, 07:45 PM
I took mine to Kyle's shop for a smoke test when I had a leak code on the Cav. Mine turned out to be a valve/solenoid(?) back by the evap canister.

Formula WS6
01-15-2012, 10:26 PM
I seem to have an evap system leak in my 2010 Impala (had Auto Zone pull the code). I replaced my gas cap already (with a factory replacement), and that didn't help (SES light went off for a couple days, but then came back on). Is there a way that I can test to find out where the leak is coming from, or do I need to have a shop do a smoke test? It's annoying that the remote start won't work when you have a simple emissions SES code.

Most likely culprit is the vent solenoid in the drivers rear wheel well attached to the fuel filler neck. It's a reasonably priced part. Right around $32 from gm. You'll also need a small piece of 90 degree heater hose to re connect the solenoid to the evap line. I've changed 4 of them on impalas in the last 2 months

DamonZ28
01-19-2012, 01:34 PM
So would you just remove the rear wheel and wheel well cover to get at the solenoid?

DamonZ28
01-19-2012, 01:40 PM
Hmm, my local dealer told me the part is about $100. Do you have a part # by chance?

Formula WS6
01-19-2012, 01:58 PM
what's the 8th digit of your vin? N, M or K?

Formula WS6
01-19-2012, 02:00 PM
yep, driver's rear wheel liner. You can get away with going under the back bumper/quarter panel but be prepared to get shit in your eyes. Your best bet is to just remove the liner. a couple 7mm bolts and plastic push clips.

DamonZ28
01-19-2012, 02:06 PM
what's the 8th digit of your vin? N, M or K?

N

Man, it's cold outside. (I had to enter more characters because apparently just 'N' is too short of a reply on this board!)

Also, I see that it might be wise to get the actual code - sounds like there's several codes that could be set, related to this issue.

Wrencher
01-19-2012, 02:25 PM
Is it a 15839554 I think that's it.

DamonZ28
01-19-2012, 02:48 PM
Yep, that looks right. Rock Auto has it for $38, so I'll probably order it from there.

flightway
01-21-2012, 04:57 AM
I like this forum very much. This is really very informative.

DamonZ28
01-21-2012, 01:04 PM
Glad we could help! :)

DamonZ28
01-19-2013, 09:54 PM
A year later, I finally ordered the part and replaced it. Wow, what an easy project! I did remove the rear tire and the wheel well liner, but you probably wouldn't have to. My old solenoid got so plugged up that I couldn't even pump gas without the pump shutting off every few seconds. I ordered the part off Amazon for $38.88, so it was a cheap easy fix. After a little driving, the tank filled without shutting off, the SES light went off and everything looks good!

Formula WS6
01-19-2013, 11:52 PM
Perfect