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Anyone get the 9L7 Upfitter AUX switches

Brian Romanowski
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2k19Sierra Enthusiast

2k19Sierra

Posted
Posted
25 minutes ago, Swiftks said:

Never mind, I think this is it:

 

https://www.gmpartsdirect.com/oem-parts/gm-instrument-panel-wiring-harness-84497098/?c=Zz1lbGVjdHJpY2FsJnM9ZnVzZS1hbmQtcmVsYXkmaT1HSDE5MjIyNSZyPTEmYT1nbWMmbz1zaWVycmEtMTUwMCZ5PTIwMTkmdD1hdDQmZT01LTNsLXY4LWdhcw%3D%3D

 

How do you know if this is needed or not though.  I would assume it is, if you're trying to reto-fit the aux switch bank into a vehicle it wasn't originally intended for.  Thoughts?

yes that is it & is definitely required to install the upfitter switches.  Then there is a harness that goes from this, through the firewall & to the battery where it connects to the aux fuse block on the battery.  Your truck may need this fuse block kit as well, depending on your trim level/package.  Though from what i can tell, this is only added as part of the snow plow prep package  part numbers above for this. 

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Craftism
Craftism

For those struggling, I've compiled a Google Doc with all the kits, part numbers and my install process.   https://docs.google.com/document/d/1cudKHwiVgJA549Vl_Dyt6bqa1RRblfEMvxkkEm8c9-s/edi

David Withrow
David Withrow

Installed mine today. Hooked up air compressor for air bags.   

Brian Romanowski
Brian Romanowski

I contacted GM upfitter support and got this response a couple months ago:       ImageAndParts.pdf ImageAndParts (1).pdf ImageAndParts (2).pdf

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Brian Romanowski Enthusiast

Brian Romanowski

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Posted

I contacted GM upfitter support and got this response a couple months ago:

 

Quote

There are 4 kits currently being release into the service parts system 84756681, 84756682, 84756684, and 84756685. These all are listed in the parts catalog but not yet priced which means not yet available to order.  In lieu of the kits being available I have attached the parts list and illustration for the individual components absence of the knee bolster trim panel, that I have also provided separately.  The 182k file is the 9L7 parts information, 318KB is for the trim pad w/o push 2 start(BTM) and the 309kb is w/Push2 start (BTM). A GM Parts Dept can help you decode the rest of the option as it pertains to the vehicle you need the components for.

 

 

ImageAndParts.pdf ImageAndParts (1).pdf ImageAndParts (2).pdf

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  • 2 weeks later...
  • 2 weeks later...
Zelas Enthusiast

Zelas

Posted
Posted

Well I ordered my Kit off eBay from the Link provided by a member on this thread. Installation was a breeze and took all of about an hour or so to do. Now I Have the Aux buttons I needed. Thanks for all your help. 

Zelas Enthusiast

Zelas

Posted
Posted
10 hours ago, 2020AT4 said:

Do these install next to the e-brake button?

 

10 hours ago, 2020AT4 said:

Do these install next to the e-brake button?

Yes sir they do.

 

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JR09country Enthusiast

JR09country

Posted
Posted
Well I ordered my Kit off eBay from the Link provided by a member on this thread. Installation was a breeze and took all of about an hour or so to do. Now I Have the Aux buttons I needed. Thanks for all your help. 
Got some pictures?

Sent from my ONEPLUS A6013 using Tapatalk

Zelas Enthusiast

Zelas

Posted
Posted
On 12/28/2019 at 12:18 AM, JR09country said:

Got some pictures?

Sent from my ONEPLUS A6013 using Tapatalk
 

 

IMG_6973.HEIC

2k19Sierra Enthusiast

2k19Sierra

Posted
Posted

Just had mine installed. Dealer had no clue pretty much has to walk them through it. But they didn’t charge me labour since they had never done it before so not all bad! 

82591852-3717-4EFF-9A53-FD2785A8DE4C.jpeg

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CNADN SIERRA Enthusiast

CNADN SIERRA

Posted
Posted (edited)

From what i have read in the upfitter documents, Switch # 5 output plugs into the harness and goes to the rear roof liner for a "Roof Beacon". It's the green wire with the blue stripe.

 

Code # X380 "Center High Mounted Stop Lamp Jumper Harness to Headliner Harness "

Location:   "In the passenger compartment,  behind the left C-pillar, near the headliner"

 

Has anyone seen exactly where it comes out?

Edited by CNADN SIERRA
mkeddie Enthusiast

mkeddie

Posted
Posted
From what i have read in the upfitter documents, Switch # 5 output plugs into the harness and goes to the rear roof liner for a "Roof Beacon". It's the green wire with the blue stripe.
 
Code # X380 "Center High Mounted Stop Lamp Jumper Harness to Headliner Harness "
Location:   "In the passenger compartment,  behind the left C-pillar, near the headliner"
 
Has anyone seen exactly where it comes out?
There is a bulletin that tells u where u have to drill a hole by ur 3rd brake light
There is a exact spot that u are supposed to drill out

I'm hoping that I can reroute the wire out the firewall and under the truck to avoid drilling a hole

Sent from my Moto Z (2) using Tapatalk

CNADN SIERRA Enthusiast

CNADN SIERRA

Posted
Posted
15 hours ago, mkeddie said:

There is a bulletin that tells u where u have to drill a hole by ur 3rd brake light
There is a exact spot that u are supposed to drill out

I'm hoping that I can reroute the wire out the firewall and under the truck to avoid drilling a hole

Sent from my Moto Z (2) using Tapatalk
 

Thanks.  Found it. Bulletin #157.

  • 2 weeks later...
Justice555 Enthusiast

Justice555

Posted
Posted

Hello 

 

I have a 2020 Chev 3500 with the aux switches in place as an option

GM sent the fuse block and battery cable etc with the truck but the dealer will not install them as part of the PDI

 

i have read the upfitter bulletin 153 and it would appear that one has to remove dash panels just to get to the knee bolster panel.  Is this correct?

 

I need to install the fuse block behind the bolster panel but I do not want to take apart all of the dash to get to it.

 

can any one advise

 

thank you 

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