Thread: Rearview mirror temp displays "sc"

My rearview mirror displays "sc" in the outside temp spot. I replaced the ambient temp sensor located behind the front bumper with part# SU1340 from autozone. I disconnected the battery during the installation process and unplugged the mirror prior to starting the car after re-connecting the battery and it still says "sc". Any ideas anyone?

2002 gtp with the onstar mirror

I found the problem. There was a green wire grounding out under the battery. Whoever had the car before me must have put the battery on the wire and moved it around creating a hole in the insulation causing it to ground out.