[twin turbo]

Sometimes the clip can come off that holds the cable in place where it plugs in to the back of the transmission. This can cause the cable to back out and disengage. Could just be a matter of pushing the cable back all the way in and reclipping it to hold it in place. This happened on my Cobra replica, took 5 minutes to fix. Just an FYI if you wanted to check it yourself. Cheers and welcome to the madness.