Too damn cold to swap Valve today, will do this weekend at Cousins shop

 

I don't understand how you have 0 boost and there is no CEL. When the problem shows up, you should keep flooring it over and over until the CEL lights up. Don't turn off the car until you are ready to scan code. If your OnStar is still active, you can hit the OnStar button and ask what the code is.

 

Idk either man but I drove like that for 10 miles and didn't get any codes. I honestly don't know what happen. Next time if it ever happens again I'm goin straight to the dealer

 

No codes on mine either.

Booted from a roll this morning, boost spiked up for a second then went to zero and it fell on its face. Revs continue to go up but its running N/A power wise. Can't hear the turbo at all and when I let off couldn't hear anything either...

I do have a hidden Trifecta tune over my GMTU, so I am going to do a datalog with just the GMTU active and send it to Vince, maybe he will be able to see something.

 

Yeah let us know what he says. I'm stumpped. :/

 

Since you have the trifecta EZ flash software, you are also able to view and clear CEL. Sometimes, a code is stored and CEL will not light up but you can still view the "stored" code through EZ flash. You would have to scan shortly after you experience the problem since the codes are not stored very long.

 

No CEL sounds like a sensor wire....when I was going thru this I never had a light.

 

Are you referring to the lower sensor attached to the charge pipe near the ac condenser? Or some other sensor?

 

Victory SS is correct. Anybody who says that you shouldn't have a problem simply hasn't had the problem. I had the same exact problem and all I did was swap the paper filter for a K&N and after a few months it suddenly started doing this same thing. I had it in the dealership and they couldn't ever figure it out and it took the nice members here to clue me in. I was also getting a CEL on occasion. I tested it by installing the paper filter back on and the car drove fine and the CEL went away.

What I ended up doing was buying the HP Tuners software and completely swapping out my intake with a new one, then tuning the MAF into tolerance. The ECU on the SS for "SOME" owners is very sensitive to changes in the intake, even a simple filter swap will throw it out of tolerance. Trust me, I spent MONTHS trying to figure it out and after about 3 days on this forum, I knew what the issue was and how to resolve it. Either put back the paper element and run stock, or have it tuned at a dyno shop to get the ECU to recognize the new readings from the MAF. Or like I did, buy a tuning software to do it yourself. If you are not interested in learning tuning software, then stick with the previous two options. Listen to those that have experienced the issue or helped others who experienced the issue. Not the ones who haven't.

But like Victory said, if you put the paper element back and it still has issues, then something else is wrong, like the MAF, BOV, or something like that. The no CEL is interesting.

 

Ya..lower..have to look real close as it will look normal when its not..if suspected, just zip tie the lower tube to the radiator to pull it away and test drive..if it still happens then keep looking