Rearview mirror temp and compass intermittently begins flashing gibberish
The temperature and compass LED on my 2003 Tahoe rearview mirror intermittently begins flashing gibberish. This happens when the mirror is exposed to direct sunlight and the back of the mirror becomes very warm to touch. The rear of the mirror temperature also gets quite warm even when driving at night, but the compass/temp work. OnStar works when the temp and compass display is malfunctioning.
Many ideas on a fix? I suspect that it was in a crash that wasn’t reported because the headlights are out of whack and the bolts on the battery side of the fender were painted.
I don't remember what it should do but removing the connector should have a specified effect on the temperature the system reads with no sensor.
This diagram may help you find the location of the ambient temperature sensor AND it's cable. Check the connector for corrosion.
#4 and #3 in diagram.
AC Delco part number is
If you need the sensor, these are vehicles which use the same piece
that are in the pick n pull yards...
CHEVROLET CAPTIVA SPORT
CHEVROLET EXPRESS 1500
CHEVROLET EXPRESS 2500
CHEVROLET EXPRESS 3500
CHEVROLET EXPRESS 4500
CHEVROLET SUBURBAN 1500
CHEVROLET SUBURBAN 2500
GMC SAVANA 1500
GMC SAVANA 2500
GMC SAVANA 3500
GMC SAVANA 4500
GMC YUKON XL 1500
GMC YUKON XL 2500
Good luck. Hope this info leads to the problem source.
2014 Malibu 2LT, 2015 Cruze 2LT,