mbries

Time will tell if it's fixed for good, but it is fixed for now. The Equinox came back from the dealer today (had to wait on parts). They replaced the front side door window control switch (part number 84512890).

Here's the diagnostic text from the invoice....
"Memory seat module receiving input from mirror switch when mirror switch is not receiving input using doc 5339697, disconnected driver mirror and tested ground circuit and 5V reference circuit, each circuit tested OK, verified driver mirror vertical position parameter on scan tool is less than 4.6V, parameter is greater at 5.01, disconnected driver window switch and tested signal circuit for less than 1V, signal circuit is 0V, replaced driver window switch assembly and verified repair"

Hope this helps someone else!

Equnikon

I have had similar problems with my 2018 Equinox Premier. It has spent a week at the dealer 6 times since June. They keep "reprogramming" but that doesn't seem to help. Did your solution fix it? I see that it has been over a month since your post, and I'm hoping you will tell us that took care of it.

Equnikon

Did that fix the problem? I am taking mine back in for the 6th time tomorrow, same problem.

mbries

For a couple of weeks, but we took it back about a month later (mid-October). They gave it another attempt and so far, so good. Not a lot of faith that it will last since this is my 3rd "repair" of the issue. Here's the dealer description of the work performed in October 2021....Time will tell if this fixes it for good. Good luck tomorrow! Keep us posted if you get any answers.

TheGodfather

I hope the seat memory fix holds. Bad news is that my 2020 does same on right door mirror, so trading newer wont get you away from this issue. Sad that with all these reports Chevy cant resolve this in at least 3 model years.
On my Equinox, I had it set for right tilt only. Then started either not returning to set position, or not tilting in reverse, then looking at sky in drive. I have tried turning feature to drivers, or completely off and it still randomly looking at ground. Its super dangerous when changing lanes. Ready to unplug mirror..

simon.crim

It has been awhile since I posted and looked to see if anyone has found a fix..... sad to see not one has had any luck. Anyone think it is being caused by a water leak on the mirror itself or on the window seal? I seem to have the most trouble when it rains. if its dry for awhile it works right for a few days.

mbries

I’ve not had it happen since my last dealer visit in October. Not sure how much time will have to pass for me to feel like it’s “fixed”, but so far so good.

TheGodfather

Reading all the threads about random mirror movement helped my think from a different angle. About the key fob/seat preference switch. I believe the person who had a switch replaced under warranty may have have found the solution. In my case, I'm at 40k so if I tried that it would be a cash repair. Even though so many people report the safety issue with mirrors, on other models as well, GM still has no recall. My right mirror on my 2020 Equinox started random issues. Sometimes it would tilt down and not go back up. Other times I would find it looking at the sky. Couldn't catch it doing it but I always seemed to discover it when changing lanes. I had a few close calls. I was ready to open the door panel and unplug the damn mirror, which then I would lose defog/defrost. I did try totally clearing all seat presets and vehicle screen settings. No luck. Because I was thinking about the driver's door switches talked about, I stumbled onto a screen setting under the vehicle tab. You have to scroll down to see it. It's not with the mirror settings.

Here's the sequence: SETTINGS-VEHICLE TAB-COMFORT & CONVENIENCE-REVERSE TILT MIRROR (I turned it all off). Then: SETTINGS-VEHICLE TAB-SEATING POSITION (I turned off both Entry and Exit settings). The mirror hasn't moved since. If you click on one of the settings, it explains. Even though it's labeled as Seat Position, it also affects the mirrors etc.

This is NOT ideal. Many find the tilt in reverse option helpful, but when it fails it's dangerous. But you and I know GM will never step up for a mirror issue. If you're under warranty, get the switch replaced and see if that fixes the mirror issue. If not, try this fix. I believe it would probably work on other GM models/years with the same issue.

mbries

My mirror started acting up again. Just got it back from the dealer yesterday. This time they replaced the driver seat adjuster memory module (23338340).

Here's the text from the dealer invoice...Here's the history of my Equinox and this issue:

• Sep-2020: Replace drivers outside rearview mirror (84604256)
• Sep-2021: Replace front side door window control switch (84512890)
• Oct-2021: Reprogrammed memory seat control module.
• Dec-2021: Driver seat adjuster memory module replacement (23338340)

Warranty was over in early December. They still covered this last update, but made it sound like that is no longer a guarantee (even though it was identified and failed to be repaired while under warranty).

ChevyEdmr

Having the same problem. Try changing lanes on major highway only to find your mirror pointing to the ground. VERY DANGEROUS. Dealer insists there isn't a problem and it's owner error in not setting it up correctly>.