07 Equinox Temp Gauge or BCM

I have a 2007 Equinox. The temperature gauge sometimes works but most of the time it shows hot or off the scale even at start up in the morning. I replaced the coolant temperature sensor and no change. No problems with overheating though. I figured it must be the instrument cluster panel and I’d live with it and have been for the last 6 months. This morning, after I started the car, I had no power to the entire AC control section under the radio section. After work I started it and now I have AC control power and all is good (except the wacked out temperature gauge). After reading about this, I am thinking I might have a bad BCM. Maybe these are unrelated. A blown fuse couldn’t cause the self-fixing AC control issue, but a bad BCM could cause both problems. Thinking about replacing BCM but would like to do a little troubleshooting first with some expert advice. Please offer any help here if you have experienced this or know about this. Any help would be greatly appreciated.

Having similar trouble with my 2007 Equinox.

Did you find out what caused the problem??' Was it the BCM or was it something else like teh temp. sensor or the cluster.