03 avalanche the direction N/S/E/W work but the temp dosent read anything except oc
SOURCE: temperature guage
Right behind the grill around the rad. support on the passenger side (usually) there is a sensor called an ambient temperature sensor. That gives your outside temp. on your rearview mirror.
SOURCE: external temp reading is wrong... can it be reset?
i belive thats a default reading for that sensor replace it there cheep buy from dealer and locate it in front grill som times debris hit tese and mess them up simple repair probably only one screw holding it on
SOURCE: Can't get the outside temp. showing in the inside backview mirror
Check the connector that plugs into the back of the mirror and make sure it is pushed in all the way. If that is not it, look carefully at the wires going into the connector. I had one that broke off. I had to pull the pin out of the connector and re crimp it onto the wire.
SOURCE: temperature control sensor?
Sounds like a loose connection -38 is probably the open circuit position. Not sure where the sensor would be though.
SOURCE: temp reading on rearview mirror always says 0C
OC means open connection. Check connector at temperature sensor under the hood, it is located along the radiator support about at center position.
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