Just got a call from the dealer....

They said they are not getting any readings for the 02 sensor? And no boost pressure readings from the MAP sensors?

Anyone know what the heck that means?

 

I would be guessing, the computer messing up, you replaced those sensors, they should be sending the signal.

 

my guess bad ecm, or wiring.

You wouldn't happen to have a Fox & Hound? You could trace the wires pretty easy.

 

They installed a new 02 Sensor...and reflashed the GMS1 Tune (Trifecta is now gone). They want me to come and drive it......this should be good.

 

Good luck!!

 

Looks like I got a new 02 sensor out of the deal and thats it. They didn't even reflash it. They said they can't reflash it because there are no new updates....and mine has the lastest update. They said in order to reflash it that would have to call GM and get some number. They said that if they did that GM would want to know if they are flashing a new ECM or if the current vehicle has been modified in any way. So....they didn't reflash it. I guess I'll get ahold of Vince and see what he can do. I need my Trifecta updated anyway for my Dejon Intake. Maybe he can see what's going on when we datalog it.

 

You lost me on this. Two posts ago you said the Trifecta was gone. Now you say you'e going to get it updated. Which is it?
And to reflash for the GMTU the dealer has to call GM to get the code,number or whatever it is. Have the dealer call them and explain the issue appears to be with the reflash from a previous GMTU.(just don't let them mention the other upgrades you've added) .
IMO it just seems this is where the problem is. You've put a lot of parts on that haven't fixed it. Time to go back to Square 1.

 

AT FIRST the dealership said they were going to reflash it....but then said that they cant. So....they did nothing to the PCM...it's still the same as when I brought it in.

 

"said they can't" Sounds like they're saying they won't. Sorry, but it sounds like the dealer is trying to wash their hands on this one. Contact GM yourself and get an explaination.
Like I stated. I think you need to go back to square 1 and start over on this GMTU install.

 

This is why I bought HPTuners you can re-flash yourself back to the original tune in your driveway. I've over-tinkered with my tune more than once (OK, a bunch of times) and flashed back to the original GMTU then start again.
Just a thought.