The dealer replaced the ECM. They said it's working correctly now. About to go pick it up, so we'll see. They told me the tech spent the afternoon on the phone to GM Engineering and thats how they decided the ECM was bad. I'll follow up with a report when I get back.

 

I road tested at least the first 5 installs that we did. They all ran like a bat out of hell with no learning needed.

 

Success! I have my reliable grocery getter back It promptly ate a Eclipse GST for lunch...hehe. Don't think the kid was expecting a wagon to hand him a whuppin like that...lol.

You're right Chevy, these do not have adaptive ECU's. I knew right away the service mgr was blowing smoke when he said that. It sounds like the tech that did the inital flash messed up one of the other cals in the ECM causing it to not read anything correctly. He essentially bricked the original ECM.

 

Thought so....Thanks. You are a gentleman and a scholar (but, I won't tell your wife).

 

A week later and it's still doing great. Just dropped it off at the body shop for them to fix the damage the deer strike did. Hopefully will have it back by the end of this week.

 

Sweet wish u luck. Waiting is the worst

 

I second that!

And mine was done 3 years and 36k mi ago. I had a known tech who is well versed in LNF do the install. Before that he did many St1 and St2 on the Cobalt LSJs. I've seen most failures are attributed to workmanship issues.

 

Or it rubs on the condenser

 

Don't you mean compressor?