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Center rear view mirror swap.

This is a discussion on Center rear view mirror swap. within the Interior Modifications forums, part of the Equinox, Terrain & SRX Modifications category!
I have a 2015 Equinox LS. Originally, it did not come with a self dimming rear view mirror, but did ...

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Old 12-11-2019, 08:00 PM   #1 (permalink)
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Unhappy Center rear view mirror swap.

I have a 2015 Equinox LS.

Originally, it did not come with a self dimming rear view mirror, but did have Onstar. So I recently purchased one from a used parts place.

Removing and installing the new one wasn't a problem, but what I'm running into is the self dimming doesn't work. It stays normal all the time. The Onstar buttons work fine.

I also checked the wires coming from the old one to the new one and it's the same number and type.

So my questions are:
Do I have a bad mirror?

Do I have to have the car programed to see the auto-dim mirror?

Is there a special procedure to install this thing so it will work correctly?

Thanks in advance, any help is appreciated.
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