They only offer a 186 degree thermo for these trucks. I think there are a couple companies that offer lower temp ones for when you put a blower on them and stuff, but I haven't seen anywhere that offers a higher temp one. Plus, I would have to reprogram it if I change the temp range, or it would also trip the p0166 code.

I'm thinking about putting the '05-06 tahoe electric fans on it and seeing if that helps. If the fans aren't on, then maybe it will actually warm up. It would definitely help in the summertime as well, keeping the a/c at meat locker temp even when it's 100+ in stop and go traffic.