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Ccrunner84, it could of been tuned by someone else after the zzp tune, not sure since it's a used car.

And thanks steve, I totally agree, guess it's time for a pcm, going to try to read it one...

Thankyou cobaltssoverbooster. That's what I was afraid of. Probably easier for me to just to buy a used stock PCM, I'm sure it would be more cost effective than the dealer.

Thanks for the info psykosteve, just hard when you have no idea the history, or mods done to the car and who tuned it etc. I tried to read the pcm in HP tuners 3.0 editer, with my mpvi interface but...

So basically I should get a new PCM and start with a fresh tune and try to get it perfect. I was told this car ran fine about 6 months ago and was parked for winter. Any idea what sensors could cause...

Keith, I plug in the interface, and laptop, Turn the key on, and yeah probably wait 15 to 30 seconds before I hit the read button and get that message. So most likely locked? Any Chance I could read...

Hi I'm Les, I purchased HP Tuners a few years ago to tune my 2004 ecotec cavalier with a m62 supercharger, and finally got on the forums because I bought a Cobalt SS/SC to have fun with. Can't wait...

I attached a log file. Purchased a 2006 cobalt ss/sc, starts right up but loves to stall usually once you start driving and come to a stop sign. Smells rich from the exhaust pipe (and is drinking gas...

Bought a 2006 cobalt SS/SC and was curious what was in its current tune since its not running correctly, and keep getting this error message when I try to read the PCM: Controller Unlocker: X11...