2007 Tahoe EVAP code

[First-light]

So I have this truck it has almost 300k on it. Got an evap code engine light on the other day. Easy fix was the EVAP purge valve on the engine and new gas cap didn't fix it. Next step would be to change out the solenoid and charcoal canister. Car parts.com I can get them for about $300. It will be a pain in the ass to do but I'm no mechanic but could get through it. Thought is am I just chasing my tail and if I do the work and still get the code it would suck. I could bring it to service at the dealership but that is going to be expensive.   I'm original owner and use the truck mostly around town back and forth to work. Has a second motor at 200k. Runs great Any thoughts would be appreciated. 

Thanks

Burt

[Four Seasons]

What code # was thrown?  Lots of miles on the ole girl. My guess would be the canister or line and getting it smoked would show something. Anyone in your area just charge you to smoke it and send ya on your way to fix yourself?  Smaller shop maybe?

[Arcade Hunter]

Like four seasons mentioned above, these items are the most likely culprets.  But... Im sure you dont want to spend more than you have to on this issue.  Being that it is a NY vehicle, there is the possibility that the fill pipe or the top of the fuel pump rotted a hole through it also.

It would probably be best to smoke the system and check for leaks before buying any parts for it.  You may find a rot hole somewhere or a stuck open vent valve.  Very common on those GM's

[First-light]

Hey guys thanks. That is what I'm doing . Got an appointment at a local shop and they will do the smoke check on the system. Highly recommended place so I should be ok. 

[Steve D]

I had a similar issue with one of my trucks. The smoke test is probably the best bet and can still cost quite a bit.

 Once the first problem is found and fixed there could be another one that could throw a code, resulting in another test and another part replacement.

The other issue I ran into was the part that needed replacing (fuel pump module) could not be replaced without the truck being reprogrammed. It was exposed and easy to get to and probably a fifteen minute job at the most.

If I would have replaced it myself I would have had to have it towed to a dealer for reprogramming.

 They don't make them to work on them anymore without a computer.

Good Luck