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Let's install the "upfitter switches"

blamkin86

By blamkin86
in Modifications & Accessories

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blamkin86
blamkin86

This week, I'll slowly detail the installation of the GM upfitter switches. They're going in a 2020 GMC Sierra AT4.   If you're not familiar with the Upfitter Switches, they're a bank of 5 s

blamkin86
blamkin86

That's it for today. Neither end of the main wire is connected to anything - and that's ok for now.   Tomorrow we'll start discombobulating the dash. There are a lot of pieces to remove. If

blamkin86
blamkin86

OK get off the floor and grab a beer. Take a break. Still a couple steps to go, then you have to put it all back together of course...   ... I'll wait. I'm not much of a drinker myself, but

Posted Images

Gilaspit Enthusiast

Gilaspit

Posted
Posted

Once everything is loose and pulled forward You will finally see the holy grail the final screw. All that to get to this one screw! Undo it and you can now remove the bottom dash. From here I would do all you wiring and switch assembly under the dash then put everything back together and plug in the upfitter switches and follow the rest of the guide to hook it up to the battery. Hopefully this helps someone. I looked everywhere and so nothing of how to actually remove the bottom of the dash completely.

 

 

IMG-0479.thumb.jpg.9c1fd3362b5bbf8600659d48e2004221.jpg

  • Like 1
  • 2 weeks later...
Seapacer2 Enthusiast

Seapacer2

Posted
Posted

Good Morning All,

 

Great write up!  Does anybody have a part numbers for the up fitter switch kit?

Gecko50 Enthusiast

Gecko50

Posted
Posted
1 hour ago, Seapacer2 said:

Good Morning All,

 

Great write up!  Does anybody have a part numbers for the up fitter switch kit?

Requester,

The Service Parts 9L7 retrofit kits are NOW available.  Below is the kit P/Ns based on the vehicle’s interior color and whether it has push button (BTM) or keyed ignition start. The table below then provides the list of P/Ns that are included in the kit for your vehicle application. NOTE: dealer price for these kits is $126.92, if more pricing information is required dealers are recommended to contact the pricing center customer assistance and request pricing.

  • 84942071 for use with Jet Black interior and keyed ignition (-BTM)
  • 84942072 for use with Very Dark Atmosphere Interior and keyed ignition (-BTM)
  • 84942073 for use with Jet Black interior and with push button ignition (+BTM)
  • 84942074 for use with Very Dark Atmosphere interior and with push button ignition (+BTM)

 

Kit #

 

84942071

 

84942072

 

84942073

 

84942074

 

Knee Bolster

 

84487351

 

84487352

 

84487354

 

84487355

 

Switch Bank

 

84688687

 

84688686

 

84688687

 

84688686

 

Fuse Kit

 

84669070

 

84669070

 

84669070

 

84669070

 

Fasteners

 

11589015 (2)

 

11589015 (2)

 

11589015 (2)

 

11589015 (2)

 

Aux Fuse Block

 

84645397

 

84645397

 

84645397

 

84645397

 

Under Hood Wiring harness

 

84794790

 

84794790

 

84794790

 

84794790

 

Retainers

 

11589290

 

11589290

 

11589290

 

11589290

 

 

The dark coco color interior is called "Very Dark Atmosphere" Now look carefully at the part numbers as it depends on how your truck is outfitted with OR without a key type switch. I did my own taking my time and I can say you will have to disassemble the entire (or most of it) the center console. Do a search and a good article is on Diesel forums. I had to redo the entire writeup in MS Office as the photos were messed up. I again took my time. I utilized my own means and methods. 

 

Good Luck

Chuck

  • Thanks 1
  • 2 weeks later...
JT19HC Enthusiast

JT19HC

Posted
Posted

Quick stupid question.  In regards to the 4 "hot wires" that come off the switch panel, do I wire my light positive directly to them and ground to driver side battery?   Or do I still run this to a relay that is typically used when running accessory lighting etc.  

  • 2 weeks later...
Gecko50 Enthusiast

Gecko50

Posted
Posted
On 11/8/2020 at 9:58 AM, JT19HC said:

Quick stupid question.  In regards to the 4 "hot wires" that come off the switch panel, do I wire my light positive directly to them and ground to driver side battery?   Or do I still run this to a relay that is typically used when running accessory lighting etc.  

You can put the positive wire directly to one of those upfitters wires as the upfitters already has relays as part of the kit. Remember there rating of each switch to 20 amps and 30 amps. You can usually ground the negative to the metal of the truck. Also you can select by position of the fuse asswmbly where its can be turned on by key on use or swap the fuse slot to activate power on at all times. Of course by pushing the button / switch on the group. 

 

Chuck

  • 3 weeks later...
Gr8DaneOperator Enthusiast

Gr8DaneOperator

Posted
Posted

So I am pretty sure that I saw somewhere that the 5th switch is for a wire in the headliner for a strobe, does anyone know where in the wire harness that is so we can utilize it?  Also the switches are all on/off, is there a way to make any of them momentary switches ( for something like an air horn)?

Gr8DaneOperator Enthusiast

Gr8DaneOperator

Posted
Posted

I was able to do the install without removing the kick panel, If you pop out the switches which was very easy, and remove the fuses from the side as described, I had plenty of room to do all of the wiring.  And instead of screwing the module in place, I just used zip ties and it feels sturdy as heck. However I think if I need to there is enough room behind the kick panel to get a 1/4" ratchet with a small bit and screw behind the kick p[panel if you pull it out just a bit

Gr8DaneOperator Enthusiast

Gr8DaneOperator

Posted
Posted

I found the wire for the 5th switch using the wiring diagram on gmupfiitter.com.  it is pin 8 on the harness and should be green with a blue stripe,  Remove the connector, pull the red lock out (in the middle of the lock there is a tab) I used a pin removal tool, or you can use a tiny screwdriver to lift the locking tab inside the connector via the non wire side, and pull out the wire,

PXL_20201207_160414132.jpg

  • 2 weeks later...
mihuntn Enthusiast

mihuntn

Posted
Posted

Found this video on taking center console trim pieces and radio off.

 


 

  • 2 weeks later...
ekbruster Enthusiast

ekbruster

Posted
Posted
On 10/30/2020 at 12:56 PM, Gecko50 said:

Requester,

The Service Parts 9L7 retrofit kits are NOW available.  Below is the kit P/Ns based on the vehicle’s interior color and whether it has push button (BTM) or keyed ignition start. The table below then provides the list of P/Ns that are included in the kit for your vehicle application. NOTE: dealer price for these kits is $126.92, if more pricing information is required dealers are recommended to contact the pricing center customer assistance and request pricing.

  • 84942071 for use with Jet Black interior and keyed ignition (-BTM)
  • 84942072 for use with Very Dark Atmosphere Interior and keyed ignition (-BTM)
  • 84942073 for use with Jet Black interior and with push button ignition (+BTM)
  • 84942074 for use with Very Dark Atmosphere interior and with push button ignition (+BTM)

 

Kit #

 

84942071

 

84942072

 

84942073

 

84942074

 

Knee Bolster

 

84487351

 

84487352

 

84487354

 

84487355

 

Switch Bank

 

84688687

 

84688686

 

84688687

 

84688686

 

Fuse Kit

 

84669070

 

84669070

 

84669070

 

84669070

 

Fasteners

 

11589015 (2)

 

11589015 (2)

 

11589015 (2)

 

11589015 (2)

 

Aux Fuse Block

 

84645397

 

84645397

 

84645397

 

84645397

 

Under Hood Wiring harness

 

84794790

 

84794790

 

84794790

 

84794790

 

Retainers

 

11589290

 

11589290

 

11589290

 

11589290

 

 

The dark coco color interior is called "Very Dark Atmosphere" Now look carefully at the part numbers as it depends on how your truck is outfitted with OR without a key type switch. I did my own taking my time and I can say you will have to disassemble the entire (or most of it) the center console. Do a search and a good article is on Diesel forums. I had to redo the entire writeup in MS Office as the photos were messed up. I again took my time. I utilized my own means and methods. 

 

Good Luck

Chuck

So this might be a stupid question, but can anyone confirm that these part #'s are the same between the 1500 and 2500HD trucks?

 

Thaflood Enthusiast

Thaflood

Posted
Posted
On 12/28/2020 at 3:21 PM, ekbruster said:

So this might be a stupid question, but can anyone confirm that these part #'s are the same between the 1500 and 2500HD trucks?

 

I am curious on this as well. 

ekbruster Enthusiast

ekbruster

Posted
Posted
On 1/4/2021 at 3:45 PM, Thaflood said:

I am curious on this as well. 

Confirmed, I got the kit in the mail today from gmpartsdirect.com, just got the old panel removed (not fun) and will pull wires tomorrow before putting the new panel back in, but did a quick fit check and everything lines up on my 2500HD AT4...

Tony2020 New Member

Tony2020

Posted
Posted

I  have been looking for the kit 84942073 for use with Jet Black interior and with push button ignition (+BTM).

Had it ordered with gm parts direct, but the order was canceled do to "back ordered and no expected date". Does anybody know if its available anywhere? Looks like most of the gm parts sites are the same pages with different names....

Thaflood Enthusiast

Thaflood

Posted
Posted
4 hours ago, ekbruster said:

Confirmed, I got the kit in the mail today from gmpartsdirect.com, just got the old panel removed (not fun) and will pull wires tomorrow before putting the new panel back in, but did a quick fit check and everything lines up on my 2500HD AT4...

Thank you! So on that parts list you had to order 1 of everything? Or is there 1 part number that includes the entire kit?

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