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Dl3 mirrors

Alejandro Cantú

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runsdeep Enthusiast

runsdeep

Posted
Posted

You will have to drill an extra hole to mount them as the tow mirrors are larger. Does your truck have the turn signal now? if not you will have to run a wire from ea. mirror to the BCM to get them to work.

G Mcpherson Enthusiast

G Mcpherson

Posted
Posted

You are talking about just the regular side mirrors and not Tow mirrors correct? Wanting to add power fold with turn signals.

G Mcpherson Enthusiast

G Mcpherson

Posted
Posted

I am not sure if your Truck was set up for that option. Your door harnesses do not have the correct pins for that. The harness that is at the inside door connection on the cab might not have the pins either. Not sure what needs to be done to add them. Also might need new cals for of those functions. Maybe some one could chime in here? I will have DL3 Mirrors and both existing door harnesses from my 2015 available later today. They are power fold with signals. You will also need a Door switch for operation.

sk Senior Enthusiast

sk

Posted
Posted

There is a LOT that has to be done if you want to get all the functions working (including auto-dim and auto-tilt). Even if you can get all the wiring done correctly you will need to convince (and pay!) the dealer to flash your BCM based on a different VIN.

 

I'm not saying that it can't be done, just that it will take a lot of work, money, and time. Search these forums and you will find a lot of threads about the retrofit.

runsdeep Enthusiast

runsdeep

Posted
Posted

What do i need to install the dl3 mirrors with working blinkers and everything

Sorry, I thought you were wanting to add tow mirrors to your truck.

Zan Graeber New Member

Zan Graeber

Posted
Posted

Thanks G McPherson!

 

OP from what I've seen and read about this issue, it can be done and can be a plug and play mod but will require all of the harnesses and correct modules along with the bcm flash. Can get pricey.

 

Really all depends on how much you're trying to keep warranty in tact. Blinker wires can be sliced. The power option may or may not already be in your door.

 

As for the power folding, you can make it work with a few relays and a pulse timer wired to the switch. Again, that's an "aftermarket" approach.

jbreeds09 Enthusiast

jbreeds09

Posted
Posted

You can swap DL8 mirrors for the up-level DL3 mirrors. It just takes a lot of effort. I just completed the swap and it took me two months to do everything properly given my limited free time.

 

Options I have working:

  • Power Fold In/Out
  • Directional Power Adjust
  • Left/Right LED Turn Signals
  • LED Puddle Lights
  • Driver's Auto-Dimming Function

I am hoping to do a write up soon on how to do this swap to OEM spec. I personally bought all the terminals and connectors needed for the wiring harnesses so the wiring doesn't look like a hack job. If you want the dimming features to work you must buy the Auto-Dimming Interior Rearview Mirror. You must buy a proper switch which I believe GM no long has in production. You cannot get auto-tilt in reverse to work without the memory seats module. You do NOT need any VIN or BCM programming for any of this to work.

 

If you want the mirrors to fold with your key fob I believe you need the memory seats module and BCM programming. But I have not made an effort to try and get that to work.

Thomcat Senior Enthusiast

Thomcat

Posted
Posted

There is a LOT that has to be done if you want to get all the functions working (including auto-dim and auto-tilt). Even if you can get all the wiring done correctly you will need to convince (and pay!) the dealer to flash your BCM based on a different VIN.

 

I'm not saying that it can't be done, just that it will take a lot of work, money, and time. Search these forums and you will find a lot of threads about the retrofit.

Did it on my Avalanche and you are correct, a lot to be done..trick is to find a donor vehicle with the option already installed and operational.......original wiring harness was OK but it is not the BCM that is flashed but the CPU in the driver's door switch module to recognize the additional functions as well as physically having the folding buttons....not sure about the passenger but that may also have to be changed because it provides the feed to the turn signal/right mirror folding. On my Avalanche both mirrors and door switches were successfully swapped with ones from my previous Avalanche which had the folding mirrors/turn signals option and no flashing was required because the door module was already flashed from the donor vehicle.

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