I put the stepper motor for Trans Temp in my cluster a while back (2005 Tahoe) when I replaced the whole set due to one of them acting up. Unfortunately, from what I can tell 2004-2006 have to be reprogrammed to turn on the Trans Temp gauge. Mine will zero on power up, but won't move off zero and won't sweep with the Tech2 like the others. Since it zeros, I'm confident that it is installed correctly. So, my question is, since I have access to a Tech2 and TIS, what is the exact method of changing the programming to activate this gauge? I have successfully reprogrammed the driver seat module to fix the reverse power seat control issue, but when I go through the programming procedure for the cluster I don't see any options to turn on the Trans gauge. Now I haven't actually reprogrammed the cluster, just went through the procedure up to the point of being ready to upload the program. Perhaps there are options after the programming step? That doesn't seem right to me, but I haven't tested it. Anyone know what steps/equipment are needed to activate this gauge? I'd really like to get it working. And yes, I know this has been discussed in many threads, but the specific programming steps don't seem to be there.