Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
If you have a poor ground this can cause an issue with the compass and temp display on the mirror.If you can tell me what was tested/checked I can look up more info on this here just let me know.
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So I can look up the correct info on this model here,does this model have heated or memory seats at all and is the heater and ac controller manual or does it have the AUTO functions on it?
Let me know so we can continue,thanks Pete.
One more thing,what liter engine is in this model here?
And when you tested the voltage drop was this between the power and ground signal that plugs into the mirror itself?
Do you have a test light or multi meter to test electrical with at all?
O.k.,disconnect the mirror and test for at or near 12 volts dc between the Pink wire and the Black wire at the mirror connector with key on and let me know what you come up with here.
Let me know what you come up with here when your ready.
If you plug this connector into the mirror and jiggle the connector that plugs into the mirror does the compass and temp try and display then at all?
I apologize for the delay.
It is very possible the BCM has an internal electrical fault causing this issue here needing replaced.When replaced it has to be replaced with a new one as a used one will not work in your model as they have to be programmed to your model and cannot be reprogrammed into other models.
This is the only thing I see here that can be causing this fault.
Let me know if you need anything else and feel free to rate my help here as this is how I receive credit for my time.Your 5 star rating is appreciated