2021 GMC Sierra 2500 Denali HD Tow Mirror - Issues

2021GMCLP5 · February 17

The only thing that is a pain, to take these mirrors off, you have to take the whole door apart....

Newduramaxh*ar · February 17

How do you reset the factory mirrors?

GMCustomerService · February 17

14 hours ago, Newduramaxh*ar said:

I have the same issue on my 2020. Only the driver's side, I noticed when the truck is parked on the street and slightly on an angle leaning towards the curb. Mirror doesn't want to open. I've taken it to the dealer obviously they can't duplicate the problem. I've showed video to the service advisor and nothing. It's hard to leave the truck for several days, it's my only vehicle.

My neighbor down the street has the same truck with same issue.

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Another JR · February 17

20 minutes ago, Newduramaxh*ar said:

How do you reset the factory mirrors?

I don’t remember, but I remember seeing the procedure in the owner’s manual.

2021GMCLP5 · February 17

The GM reset for the power folding mirrors consists of manually folding the mirrors in, then folding them in and out with the button three times.

i found this online, when i did it, i read it as 6 total button presses. they may not work on the first or fouth, but it has worked for me since.

billa9b0ng · May 5

On 2/17/2023 at 2:30 PM, 2021GMCLP5 said:

The GM reset for the power folding mirrors consists of manually folding the mirrors in, then folding them in and out with the button three times.

i found this online, when i did it, i read it as 6 total button presses. they may not work on the first or fouth, but it has worked for me since.

Just to be clear, this is saying to force the mirror to the folded position and then use the button 3x?

2021GMCLP5 · May 5

Correct, fold them in manually...... then push the button 6 times (let it cycle). you will either hear it click into gear (which is ok) or it will just start to work.... ever since i did this mine works all the time, but you have to use them now and again or the issue will persist.