Originally Posted by
Bluecat
Did one a few months back. Don't buy into the crap on the other forums about having to run a holden manual tune. There are two wires that need to be hooked to ground. One is for the key switch release - it goes to the shifter plugin, the other so the car will start - it lives in the plug that goes to the 6l80. Hook them both up to the neutral saftey switch on what ever shifter your going to use and the other end of the switch to ground. The car will start and release the key just like it did when stock. Terminate the can bus wires in the tranny plug by looping them together + some minor tuning like killing the tcm comm codes and your done. Reguardless, make the wiring mods and the car will start and run on a stock auto tune. I know this is the short of it and over simplified, but its really not that much to do to make it work.