Originally Posted by Mitco39

The clutch switch is actually in the harness that you got, you just have to add a tap to the line. No need to add another clutch switch as the stock one will work just fine. I wired mine in last night.

Im not sure if it is as simple with the GTM setup you have. I do know that to add the no lift shift you have to tap into each of your abs sensors, which is something you do not have to do with GTMs setup. I would give Sam a call and see if it is possible to add to your existing system. If so I would be more than happy to help you out.