Tow Mirror Swap 2024 Sierra Denali 1500

ptyger · May 19

Hi all, new to the forum and the information here has been really great! Appreciate all the community and your collective knowledge.

I recently purchased a 2024 Sierra Denali 1500, but it only had the sport mirrors. I'm looking at towing a 20ft camper (~5k GVWR, so well within limits), and would like to swap out for tow mirrors. I found a set of fully featured (Blind spot indicator, 360 cameras, power fold, etc.) mirrors for what's listed as 2022/2023 (p/n 87864007 and 87864006) for a good price. I assume that if they work on those years, they will work on the 2024.

What I'm trying to figure out is:

Are these mirrors compatible with my truck?

Are the connections plug and play with what's already there, or will I need new harnesses or the wiring + RZY harness solution from Boost Auto?

What, if any, functionality will I lose using these?

Happy to provide any other information needed. Thank you!

newdude · May 19

2 hours ago, ptyger said:

Hi all, new to the forum and the information here has been really great! Appreciate all the community and your collective knowledge.

I recently purchased a 2024 Sierra Denali 1500, but it only had the sport mirrors. I'm looking at towing a 20ft camper (~5k GVWR, so well within limits), and would like to swap out for tow mirrors. I found a set of fully featured (Blind spot indicator, 360 cameras, power fold, etc.) mirrors for what's listed as 2022/2023 (p/n 87864007 and 87864006) for a good price. I assume that if they work on those years, they will work on the 2024.

What I'm trying to figure out is:

Are these mirrors compatible with my truck?

Are the connections plug and play with what's already there, or will I need new harnesses or the wiring + RZY harness solution from Boost Auto?

What, if any, functionality will I lose using these?

Happy to provide any other information needed. Thank you!

As long as those are the GMC part # mirrors, then yes. The chevy 1500s have a different mount because the doors are not the same.

They will "plug and play" but all of the lights on them won't work. To get lighting functionality, I'd enquire with Boost.

The cameras I "think" might need re-calibration. I've heard of the mirror mounted cameras working fine but the image is off somewhat.

ptyger · May 19

7 hours ago, newdude said:

As long as those are the GMC part # mirrors, then yes. The chevy 1500s have a different mount because the doors are not the same.

They will "plug and play" but all of the lights on them won't work. To get lighting functionality, I'd enquire with Boost.

The cameras I "think" might need re-calibration. I've heard of the mirror mounted cameras working fine but the image is off somewhat.

They are listed as GMC, yeah.

I found the boost harness to get the lights working, i’ll pick that up and get it installed when the mirrors come in.

Looks like White Auto Media can reprogram the VPM for the towing mirrors, so I’ll look into that as well.

Thanks for the info, appreciate the response! I’ll update this thread as I make progress.

oldKarl · May 20

22 hours ago, ptyger said:

I found the boost harness to get the lights working, i’ll pick that up and get it installed when the mirrors come in.

Just to be clear, is that the Modify + RZY Harness?
https://boostautoparts.com/products/refreshed-modify-rzy?options=&year=2024&make=GMC&model=Sierra 1500

ptyger · May 21

15 hours ago, oldKarl said:

Just to be clear, is that the Modify + RZY Harness?
https://boostautoparts.com/products/refreshed-modify-rzy?options=&year=2024&make=GMC&model=Sierra 1500

Yep, that’s correct.

oldKarl · July 26

Did you ever finish this?
If so, how did it go?

Knepp1bj · August 20

On 5/19/2024 at 8:43 AM, ptyger said:

Hi all, new to the forum and the information here has been really great! Appreciate all the community and your collective knowledge.

I recently purchased a 2024 Sierra Denali 1500, but it only had the sport mirrors. I'm looking at towing a 20ft camper (~5k GVWR, so well within limits), and would like to swap out for tow mirrors. I found a set of fully featured (Blind spot indicator, 360 cameras, power fold, etc.) mirrors for what's listed as 2022/2023 (p/n 87864007 and 87864006) for a good price. I assume that if they work on those years, they will work on the 2024.

What I'm trying to figure out is:

Are these mirrors compatible with my truck?

Are the connections plug and play with what's already there, or will I need new harnesses or the wiring + RZY harness solution from Boost Auto?

What, if any, functionality will I lose using these?

Happy to provide any other information needed. Thank you!

How did this go? Stock GM mirrors but boost wire? I am looking to do the same for my 2022 LTZ LTD. I have power fold, blind spot indicators and heat.

dzakonda · November 6

Hi everyone. New to this forum.

Also looking to upgrade standart mirrors that truck came with to a towing mirrors. Also do not want to loose any of features that truck has to offer with standard mirrors.

Thank you in advance.

JP1812 · November 8

I'm trying to figure out Which of these mirrors is the best bet. The parts departments are ZERO help that I have spoken to, and when I try to contact Eagle Auto Group about the mirrors posted above I get sent to a full voicemail box and no answer to my email. I did speak to Boost and they confirmed that the harness will cover all of the lighting issues but they don't even know if the side cameras will work correctly due to the different mounting position. I get that they would need to be cal'd but I can't find out if GMC will even do it or a cost for it. Anymore information on this would be greatly appreciated. Would be great to hear back from the author on what he experienced even if they Don't work correctly. Thanks all!!