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2020 Sierra 1500 AT4 - Tow Mirrors?

Bernardo Fanti
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Bernardo Fanti Enthusiast

Bernardo Fanti

Posted
Posted

I see a lot of threads on this topic but I can't quite pinpoint which tow mirrors to get for my AT4.

Both my mirrors are currently busted (don't ask...), although the electronics work well.

They are fully loaded, cameras/lane keeping/blind spot/auto folding/etc.

Which tow mirrors fit the fully loaded AT4?

 

These seem to lack many of the features I currently have:

 

https://accessories.gmc.com/product/extended-view-tow-mirrors-in-black-84776098?year=2020&make=GMC&model=Sierra 1500&modelId=548&body=Crew Cab Pickup&bodyId=22&wheel=Short Box&wheelId=651&trim=Elevation&trimId=5103&drive=4WD&driveId=8&engine=5.3L V8 GAS&engineId=2059&bodyNumDoors=5&categoryId=98023


Thank you!

Monkey Enthusiast

Monkey

Posted
Posted

Following, interested in this as well.  When I asked the dealer during the purchase process they said I would have to give up some of the functionality if I wanted these.  

newdude Senior Enthusiast

newdude

Posted
Posted (edited)
26 minutes ago, Bernardo Fanti said:

I see a lot of threads on this topic but I can't quite pinpoint which tow mirrors to get for my AT4.

Both my mirrors are currently busted (don't ask...), although the electronics work well.

They are fully loaded, cameras/lane keeping/blind spot/auto folding/etc.

Which tow mirrors fit the fully loaded AT4?

 

These seem to lack many of the features I currently have:

 

https://accessories.gmc.com/product/extended-view-tow-mirrors-in-black-84776098?year=2020&make=GMC&model=Sierra 1500&modelId=548&body=Crew Cab Pickup&bodyId=22&wheel=Short Box&wheelId=651&trim=Elevation&trimId=5103&drive=4WD&driveId=8&engine=5.3L V8 GAS&engineId=2059&bodyNumDoors=5&categoryId=98023


Thank you!

 

Those won't work because of all the features in your mirrors now (cameras, blind spot and folding).  If you put those on the truck would have a fit and you'll get nothing but warning messages.

 

You'd have to order each tow mirror (and most likely new door harnesses) individually for a truck that matches your build but that came with tow mirrors.

 

The label with the VIN in your driver's door jamb (not the tow label) should show a MM/YY build timeframe on it.  Any chance you can get that and post it?

 

 

Edited by newdude
Bernardo Fanti Enthusiast

Bernardo Fanti

Posted
  • Author
Posted
21 hours ago, newdude said:

The label with the VIN in your driver's door jamb (not the tow label) should show a MM/YY build timeframe on it.  Any chance you can get that and post it

 

 

Couldn't see a MM/YY build timeframe anywhere on it, the VIN is 1gtu9eetxlz259649, I imagine I can call up the dealer and get more info / part numbers for those...

newdude Senior Enthusiast

newdude

Posted
Posted
30 minutes ago, Bernardo Fanti said:

 

Couldn't see a MM/YY build timeframe anywhere on it, the VIN is 1gtu9eetxlz259649, I imagine I can call up the dealer and get more info / part numbers for those...

 

Hopefully the pockets are deep...

 

84655845 and 84655846 are the door harnesses needed.  Those retail for about $150 each.  84879427 and 84879428 are the DQS mirrors with all the same features your small ones have.  84879428 is on national backorder right now as well.  The mirrors retail for about $1287 EACH. 

 

No 100% on all of the mirror lights working so the front marker/signal and the rear facing spot lamp but everything else will as far as power fold, glass and cameras.  The harnesses will complete the lights circuit but the BCM might need custom programing from White Auto Media Services (WAMS) to turn on the operations for the lights.  

 

 

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Bernardo Fanti Enthusiast

Bernardo Fanti

Posted
  • Author
Posted
58 minutes ago, newdude said:

 

Hopefully the pockets are deep...

 

84655845 and 84655846 are the door harnesses needed.  Those retail for about $150 each.  84879427 and 84879428 are the DQS mirrors with all the same features your small ones have.  84879428 is on national backorder right now as well.  The mirrors retail for about $1287 EACH. 

 

No 100% on all of the mirror lights working so the front marker/signal and the rear facing spot lamp but everything else will as far as power fold, glass and cameras.  The harnesses will complete the lights circuit but the BCM might need custom programing from White Auto Media Services (WAMS) to turn on the operations for the lights.  

 

 

Damn! I didn't expect this - thank you so much for the help identifying those part numbers.

 

Also - DAMN, that's expensive. Hah. I was quoted nearly $2000 to fix/replace my current mirrors, despite the fact that the folding/camera all work, so I was considering replacing them entirely with tow mirrors. But that's a $3500 investment for marginal gain.

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