My 06 Crew Cab LT3 has the mirror with the temp reading and compass. lately it seems like the temp reading is not accurate with the actual outside. It seems to be reading 10F lower or so. Is this a problem likely with a) the mirror, b) the thermocouple (wherever it is) that reads the ambient temp, or c) something else.

Compass works fine.

Any options but to take it to dealer?

Mike in Alabama

 

maybe ambient temp sensor