21 Yukon AT4 power mirror over correcting

[buukum]

My Driver mirror over corrects the position when the vehicle turns on. When I start the vehicle and adjust the mirror up to make the position correct. When the vehicle is turned off and than back on the mirror moves all the way up. After I readjust the mirror down and turn the vehicle off and on again it adjust all the way down. I have tried resetting the memory of the mirrors already and my local GMC dealer can't seem to explain it. Any help would be appreciated

 

[KMeloney]

I think it's going to be some combination of the tilting settings in the Settings menu, the door switch mirror setting, and the Memory settings. You'll have to make sure they're set the way you want them in the menu, and then will have to also make sure you save it with the Memory 1 or 2 button. (And you'll have to make sure that you're not adjusting the mirror on the door switch while the position in the Settings menu is in the tilt position.) Lastly, you might have to make sure your fob is synced with the saved settings.

If getting that combo squared away still doesn't work, then... No idea.

 

[buukum]

I think it's going to be some combination of the tilting settings in the Settings menu, the door switch mirror setting, and the Memory settings. You'll have to make sure they're set the way you want them in the menu, and then will have to also make sure you save it with the Memory 1 or 2 button. (And you'll have to make sure that you're not adjusting the mirror on the door switch while the position in the Settings menu is in the tilt position.) Lastly, you might have to make sure your fob is synced with the saved settings.

If getting that combo squared away still doesn't work, then... No idea.

I will take a look at the settings. I run a dealership next door to a GMC dealer and our techs were left scratching their heads. I was hoping someone else had had the same problem.

 

[WalleyeMikeIII]

See my post (#5) in this other thread.

Driver side mirror issue

I have a 2021 Tahoe High Country. I have the driver seat set to retract for exit and then move back into position for entry. For some strange reason, the truck has started moving my driver side mirror too (to the wrong position). I have tried resetting the mirror position (both the exit position...

www.tahoeyukonforum.com

 

[cornicekurt]

I will take a look at the settings. I run a dealership next door to a GMC dealer and our techs were left scratching their heads. I was hoping someone else had had the same problem.

I do. 2022 Tahoe

 

[cornicekurt]

See my post (#5) in this other thread.

Driver side mirror issue

I have a 2021 Tahoe High Country. I have the driver seat set to retract for exit and then move back into position for entry. For some strange reason, the truck has started moving my driver side mirror too (to the wrong position). I have tried resetting the mirror position (both the exit position...

www.tahoeyukonforum.com

Any resolution?

 

[cornicekurt]

My Driver mirror over corrects the position when the vehicle turns on. When I start the vehicle and adjust the mirror up to make the position correct. When the vehicle is turned off and than back on the mirror moves all the way up. After I readjust the mirror down and turn the vehicle off and on again it adjust all the way down. I have tried resetting the memory of the mirrors already and my local GMC dealer can't seem to explain it. Any help would be appreciated

I’m in the middle of making them buy back my High Country Tahoe. They’ve had it 8 times for the same issue. Never fixed it. Warranty just expired so I’m just done getting in this car and having those mirrors either bird watching or counting lines in the road. Frustrated beyond belief.

 

[KMeloney]

I’m in the middle of making them buy back my High Country Tahoe. They’ve had it 8 times for the same issue. Never fixed it. Warranty just expired so I’m just done getting in this car and having those mirrors either bird watching or counting lines in the road. Frustrated beyond belief.

Can you kill the power to the mirror and adjust it manually (as a work-around)?

 

[cornicekurt]

Can you kill the power to the mirror and adjust it manually (as a work-around)?

I probably could, but it’s become a principle thing. Those mirrors started doing that 6 months after we bought it. They’ve replaced the entire mirror assembly on the drivers side twice and passenger side once. Complete drivers door control system once. Car has been back for the same issue 8 times now and it’s been with the dealership this time for over 2 weeks. 85k for a vehicle. I’m not working around an issue that will have my wife and I each adjusting those mirrors every time we get in this car. Thank you for the suggestion though.

 

[mplanet]

My Driver mirror over corrects the position when the vehicle turns on. When I start the vehicle and adjust the mirror up to make the position correct. When the vehicle is turned off and than back on the mirror moves all the way up. After I readjust the mirror down and turn the vehicle off and on again it adjust all the way down. I have tried resetting the memory of the mirrors already and my local GMC dealer can't seem to explain it. Any help would be appreciated

I am facing the same or similar issue, driver mirror goes down after reverse (R) and never goes up after going forward (D). I am pretty sure overall memory module does not work. Did you get it replaced?