Have an IBM laptop that I used to tune my car. Originally swapped to OBDI so I have TC OBDI but once the OBDII software came out, I purchased it too. The laptop is running XP and operates great minus a couple minor dings in the case and the battery doesn't hold a lasting charge. Also included is the OBDII cable though I gave my OBDI away to a friend years ago... they are cheap to replace if needed anyway.

Now the only definition file I have is for 96-97 LT1 but for $80, you can purchase whatever definition file is needed for your car and this will tune basically anything GM.. even 5th gens. There is no licensing fee so you can tune unlimited cars just like the OBDI software. TC OBDII is no longer sold to the public though they still support with updates and definition files which can be downloaded directly from their site... tested just to make sure before listing this. Let me know if you have any questions.

$750 shipped obo