p0449 part numbers

[Most Hated]

Just to let you know I am having exact same problem after replacing parts for that code. Also replaced purge valve on top of engine and also gas cap. Taking it in to dealer Sat to see what the hell is going on. I have a feeling it is electircal somewhere. So I will let you know if I can get the dealer to tell me.

So did u get it fixed?

 

[Most Hated]

Anyone else know any other fixes? I really dont want to take it to the dealer.

 

[02jeeperx]

I know this post is over a year old but I am having the same issue and wanted to know if anyone had an update that may help me out. Any input will be greatly appreciated. Thanks

-B

 

[jz57]

To fix P0496 problem, you need following parts:

EVAP purge valve (GM 12597567)
EVAP vent valve (GM 20995472)

It is a easy repair job, but it takes long to time reset check engine light by PCM.

 

[Most Hated]

The thread is only a few months old. Lol. But I ended up taking it to the dealer. I told the mechanic my problem and what I did and he immediatly mentioned a common problem in the harness under the drivers floor. He put it on the hoist amd found a broken wire that supplys power to the solenoid. Repaired the wire and reset the code. Whole process took about 30 minutes start to finish. He said they run into that all the time.