2024 Silverado 3500 Upfitter Switches

Pryme · February 9

5 minutes ago, gemarsh said:

The bag is zip ties.

1 minute ago, gemarsh said:

Seriously, the item on the left is is the underhood wiring harness from battery fuse block, 2nd is the fusebox for the switches mounted under dash going to a loose connector under dash and the switches, 3rd I'm not familiar with.

3rd might be for the snow plow prep package then.

so 1 and 2 are for upfitter then?

gemarsh · February 9

3 minutes ago, Pryme said:

3rd might be for the snow plow prep package then.

so 1 and 2 are for upfitter then?

Yes and the pink bag

Pryme · February 9

7 minutes ago, gemarsh said:

Yes and the pink bag

I’ll label them so in another 18mo when I wonder again I’ll know lol. Do you think it would be that difficult to set it up I mean the 1-5 pad is already in the dash.

kf9yr · February 9

I did it with my 2020 HD AT4 and I thought the difficult part was getting the power wire through the nipple above the accelerator pedal.

Since you don't have to worry about putting the switch pad in the dash the rest of the process is the same as the 2020-2023.

This thread should get you there...

Good Luck!

Edited February 9 by kf9yr

Pryme · February 9

4 minutes ago, kf9yr said:

I did it with my 2020 HD AT4 and I thought the difficult part was getting the power wire through the nipple above the accelerator pedal.

Since you don't have to worry about putting the switch pad in the dash the rest of the process is the same as the 2020-2023.

This thread should get you there...

Good Luck!

I have a 22. So that should be the write up I’d use? Thanks

gemarsh · February 9

2 minutes ago, Pryme said:

I have a 22. So that should be the write up I’d use? Thanks

Yes. But you need to drop the knee bolster to install the fusebox for the switches. No idea why gm assembly line don't install them.

Pryme · February 9

2 hours ago, gemarsh said:

Yes. But you need to drop the knee bolster to install the fusebox for the switches. No idea why gm assembly line don't install them.

Is it all plug and play or?

gemarsh · February 9

15 minutes ago, Pryme said:

Is it all plug and play or?

Totally.

Pryme · February 9

12 minutes ago, gemarsh said:

Totally.

Okay I’ll have to set it up this spring. But then actually allocating things to those buttons has to be wired in directly from say button one and running say a light bar or something?

gemarsh · February 9

There are blunt cut wires on that harness that are controlled by the switches. You will just add your accessories to the wire.

You will only have 4 wires/buttons that are available. Unless you grap the green wire out of the gray connector that plugs into the loose connector under the dash.

That wire is for a roof light. It goes all the way under the headliner to the 3rd brake light housing. It is blunt **** along with a ground.

gemarsh · February 9

Just now, gemarsh said:

There are blunt cut wires on that harness that are controlled by the switches. You will just add your accessories to the wire.

You will only have 4 wires/buttons that are available. Unless you grap the green wire out of the gray connector that plugs into the loose connector under the dash.

That wire is for a roof light. It goes all the way under the headliner to the 3rd brake light housing. It is blunt **** along with a ground.

My spell check was off, I added a "n" to cut. Sorry.

Pryme · February 9

8 hours ago, gemarsh said:

My spell check was off, I added a "n" to cut. Sorry.

Thank you for the great info. What stuff do you or anyone else power with the upfitters? I was thinking auxiliary lighting up and in the rear could come in handy

gemarsh · February 10

I use one switch to power a relay which supplies a ground to the bcm to put it into surveillance mode. This allows me to drop the tailgate and not scare game away with the dam turn signal lights blinking 3 times at 4am.

It's fine if gm wants to get all fancy and blink lights to warn people that something is going to happen when using the dash or fob buttons to drop the gate.

But jesus f***ing christ, there is absolutely no reason, if I'm pushing the tailgate button!

Pryme · February 10

7 hours ago, gemarsh said:

I use one switch to power a relay which supplies a ground to the bcm to put it into surveillance mode. This allows me to drop the tailgate and not scare game away with the dam turn signal lights blinking 3 times at 4am.

It's fine if gm wants to get all fancy and blink lights to warn people that something is going to happen when using the dash or fob buttons to drop the gate.

But jesus f***ing christ, there is absolutely no reason, if I'm pushing the tailgate button!

Yeah I’ve always thought that was completely unnecessary

chopjaw · February 11

Fellas, don't flame me but who has had a dealership install the package? What was the cost? I'm pretty handy but just don't feel like doing this. Maybe it's old age or laziness. But I am seriously considering having the stealership do the install - as long as it's under $400 dollars to do it. I wonder what the book says for install time?

Edited February 11 by chopjaw