For something like this, I would recommend going with OEM, not a knock off.

 

F'in A. Mine threw P0497 driving yesterday.
Evap emission system low purge flow

2009 SS
35k miles
gms1
k&n intake
hahn dp

So I haven't read this thread for a few years as I never had the issue until now. Sounds like I need a new purge solenoid and the evap can? Along with powells occ. All three of these?

purge valve solenoid
Ecotec LNF Bypass Valve Solenoid 12633411

evap vent solenoid
Ecotec Evap Vent Solenoid 25932573 22865590

canister purge solenoid
Valve asm-Evap Emis Canister Purge Solenoid 12592015

 

I have replaced my evap purge valve 4 times in 91k miles. I have some in the glove box. 497, 496 always come up when it goes out. Car behaves very bad.

 

Unplug, cap off and retune....

 

I'm not going to reflash the gms1. I already sold my hpt. Also unplugged and capped is a bandaid with out a full idea of what the actual issue is.

 

Sorry, was just being simple minded.

The issue is a cheap part that continues to fail, either stuck open or closed.

Also, it's not a bandaid if you are properly tuned for it as the car will rely solely on STFT (factory WB and internal fueling corrections are extremely quick) which will allow for an overall improvement in driveability and overall performance.

However, not everyone can do this and I completely understand not wanting to go through the hassle. Again, sorry for the smart assed response.

 

haha no I got ya. You have to be careful who you talk to. THe old generation on here from back in the day are fine to joke with as they know a lot. The newbies that come on from fb etc. Just ask q's about ebay parts and stupid things that are already known and posted about but they lack the search...

Yeah. If I still had hpt I could tune it out...But it was a lot to f with, so I guess I'll keep buying parts. As you see I've had it since new 2009 w/ only 35k miles on it as of today...the new evap should last a few years

Out of those three parts, is it one, two or all that break?

 

This guy?

 

Yes sir, that's the bitch. I have always wondered if it's the disconnected vacuum tank or something causing this for me. Not too worried as it's so easy to replace.

 

ah good. That evap f'er and the new rear brakes are arriving tomorrow.... finally get this pos fixed so I don't feel like I'm driving a hoopty

 

Ah didn't realize it was right on the IM. easy peasy! Just installed mine tonight after the rear brakes. CEL is gone

 

I just replaced my evap cuz I thought it was the stocker at 95k idk but it seemed find couldn't blow threw . BTW I got my evap for $0.00 on amazon idk how some coupon mabe for the delay on my k&n clean kit but hey I didn't complain lol

 

Still working great! Forgot I updated already.... This looks like an updated part number...wonder how many miles this one will last