Jump to content

Recommended Posts

Posted
On 12/19/2019 at 8:23 PM, Kevin Monaghan said:

Really the knee bolster was the hardest part to install. The rest is fairly easy, plug in, hang the fuse block and run the wire to the battery. I went to the dealer to get the missing battery stud kit today. There are 12 in California, may be awhile with the holidays.

I have this connector hanging next to the BCM. Is this where the upfitter switches would plug into? I know you had to install the whole harness, but maybe mine is already installed?? 
 

The dealer did install a big bag of parts in the back seat that included studs and fuses. It was UI bulletin #147 that covers VYU plow package and 9L7 upfitter switch power provision. 
 

Where are the RPO codes listed? They are not in the glovebox like I am used to. 

C191937B-AC49-49BD-AAF6-BB7385C74AE9.jpeg

Posted
36 minutes ago, LSX Z28 said:

I have this connector hanging next to the BCM. Is this where the upfitter switches would plug into? I know you had to install the whole harness, but maybe mine is already installed?? 
 

The dealer did install a big bag of parts in the back seat that included studs and fuses. It was UI bulletin #147 that covers VYU plow package and 9L7 upfitter switch power provision. 
 

Where are the RPO codes listed? They are not in the glovebox like I am used to. 

C191937B-AC49-49BD-AAF6-BB7385C74AE9.jpeg

Yes, that appears to be the connection location, mine did have that there installed. If you push in on the tab on the left side, that cap will come off and then you plug in the harness with the new fuse block that hangs under the column. The bulletin # 147 kit is what I am missing to connect to the  right side battery. This is all on top of the battery, below the cover.

Not sure on the codes, should say in the manual. 

 

Posted
1 hour ago, Kevin Monaghan said:

Yes, that appears to be the connection location, mine did have that there installed. If you push in on the tab on the left side, that cap will come off and then you plug in the harness with the new fuse block that hangs under the column. The bulletin # 147 kit is what I am missing to connect to the  right side battery. This is all on top of the battery, below the cover.

Not sure on the codes, should say in the manual. 

 

I misspoke earlier, I have the studs and fuses (147)  that the dealer did not install, but told me I need to. They did install #124 which was a whole wad of wires. Is that the one that you had to install? 
 

B0518D5A-75A1-433E-B08C-B3688148E6C9.jpeg

C9A7EF55-3414-4B9E-8ED0-F475C0045129.jpeg

5E71C7F7-11E9-4BDD-9FCF-96F1CF336163.jpeg

Posted
25 minutes ago, LSX Z28 said:

I misspoke earlier, I have the studs and fuses (147)  that the dealer did not install, but told me I need to. They did install #124 which was a whole wad of wires. Is that the one that you had to install? 
 

B0518D5A-75A1-433E-B08C-B3688148E6C9.jpeg

C9A7EF55-3414-4B9E-8ED0-F475C0045129.jpeg

5E71C7F7-11E9-4BDD-9FCF-96F1CF336163.jpeg

No, #124 is snowplow prep related. It has something to do with large electrical loads and the infotainment/radio performance. Dealer is supposed to install that if requested. #153 is Upfitter switches.

Posted

My buddy has one of these trucks he just picked up on Tuesday.  He has snow plow prep but doesn't have upfitter switches.  Anyone know how you're supposed to switch the strobe in that case?

Posted
46 minutes ago, Skeld said:

My buddy has one of these trucks he just picked up on Tuesday.  He has snow plow prep but doesn't have upfitter switches.  Anyone know how you're supposed to switch the strobe in that case?

I am going to do more investigating when I get home next week and back to the truck. I might just mount a single switch where the upfitter switches would mount. I am running a Game Changer strobe setup that plugs into the BCM right there anyway, so I just need to get a power wire to that area for the switch. Right now I just wired a cigarette lighter end on it to test them out. The video I have of them is to large to upload, I will have to try to get a shorter one later. It uses all of the trucks lights as strobes instead of having to mount a strobe light on the truck. 
 

 

Posted

I got my RPO codes from my dealership (parts man ) give them your Vin # an get a print out .

Posted (edited)

I have an upfitter kit that came with new 2020 Silverado 2500HD truck. I would be willing to part with it as I don't ever plan on putting a plow on it.

Joe 

Edited by pegasus
Posted

I think I would throw the switches and the keys over to the sales manager desk, keep you $70,000 truck you can't install ordered parts on. Truly unbelievable.

Posted
5 hours ago, pegasus said:

I have an upfitter kit that came with new 2020 Silverado 2500HD truck. I would be willing to part with it as I don't ever plan on putting a plow on it.

Joe 

I would be interested in purchasing it. 

Posted
5 hours ago, pegasus said:

I have an upfitter kit that came with new 2020 Silverado 2500HD truck. I would be willing to part with it as I don't ever plan on putting a plow on it.

Joe 

I guess is it the plow harness, or the up fitter switches?

Posted

So im in the process of ordering my truck and trying to get all the info on everything that im gonna need to get it built when I receive it 

few questions 

1 what is the amp rating on each switch.  it says there are 3 30 amp and 2 20 amp  I don't think I will exceed any of those but want to know before I layout what they will activate.

2 is the roof beacon wire already predetermined in the switch layout.   I plan to run a 'roofbeacon' but also some other cornering lights.

3 some of the bulletins posted here are for the 1500 are they the same for the 2500

 

any help would be great

pictures/videos would be better to help everyone thru this  

 

thanks

mike

 

Posted
13 hours ago, mkeddie161 said:

So im in the process of ordering my truck and trying to get all the info on everything that im gonna need to get it built when I receive it 

few questions 

1 what is the amp rating on each switch.  it says there are 3 30 amp and 2 20 amp  I don't think I will exceed any of those but want to know before I layout what they will activate.

2 is the roof beacon wire already predetermined in the switch layout.   I plan to run a 'roofbeacon' but also some other cornering lights.

3 some of the bulletins posted here are for the 1500 are they the same for the 2500

 

any help would be great

pictures/videos would be better to help everyone thru this  

 

thanks

mike

 

Looking at the wiring schematic it looks like switch 5 is dedicated to the roof beacon.  The others are user configurable.  Attached are the installation instructions.

Joe

UI Bulletin 153_wip.pdf

Posted

So if I'm reading that right the switches go

30 20 20 30 30

The fifth switch is the roof beacon
but can i tap into that wire under the dash to re route power out of the firewall

Sent from my Moto Z (2) using Tapatalk

Posted
 

They do light up too, the 4 blunt cuts out the bottom are for your connection. #5 is the roof beacon wire that is coiled near the 3rd brake light. (snowplow prep pkg)

IMG-0851.jpg

 did you have to cut the hole? Or was the switch mounted and you had to run the wires?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Latest Articles

  • Posts

    • Hello hello looking forward to expanding my knowledge of the 2026 2500 HD that I just bought.   Truck has 3500 miles on it four-wheel-drive crew cab and I’m about to put a 6 1/2 inch BDS lift on it 18 x 10 -25 offset with 37’s   Already have the wheels and tires just waiting on the lift install in about three weeks   Question what surprises am I not gonna be happy with?  I’m not new to lifted trucks so I know that acceleration towing gas mileage all that is affected..   Question is those of you that have this truck this powertrain with a 10 speed Allison and have done the mods that I’m doing,,, how bad is it? Is that Allison constantly gonna be hunting for the right gear to go into? And what about towing, acceleration, fuel consumption as mentioned?    Lastly how come I can’t find any ring pinion gear set up for these axles and when could I expect to see them?   I apologize if there’s any typos I’m doing speech to text on my iPhone.    
    • I've got a 2013 2500 6.0L Flexfuel. Drove the truck earlier today with no issues. Went to run an errand tonight and noticed key fob wouldn't work. Figured battery was dead, so replaced fob batter. Still wasn't working. Grabbed my other set of keys with the other fob and that one wasn't working either. So I manually unlock truck and insert key. Interior lights come on, dashboard lights up, turn key and truck starts. Turn truck off, like a moron, and try starting again. This time no crank, no click, no nothing. Lights still come on and dash lights up, but now I'm getting a service 4wheel drive, service tire monitor, etc. Check voltage on battery and Im showing 12.2v. Throw my battery charger on it and give it 15 mins and try starting again. But still no crank no start. Decide maybe its a bad battery, run to autozone grab a new one and put it in. Same issue. Disconnect battery and let it sit for 15 mins. Try again and still nothing. I had managed to roll the windows down earlier as its a humid night, but now I can't get them to roll up. Power locks are also not working now. Then randomly I try the key again, and it fires right up. Immediately I roll up the windows as we have nothing but rain forecast this week. I shut it back off wait 30 seconds and start up again. Worked a 2nd time. So turn it off, start putting things back together. Try one more time, and back to no crank no start. And now the car alarm starts going off. Had to disconnect battery and leave it that way for the night as I don't think my neighbors would appreciate my alarm going off again tonight. Any thoughts or help would be appreciated. 
    • No one will care for you like you care for you. Do what you can for as long as you can. IMHO of course. 
    • How about them NICKS!!! 
    • Hi there.  Long time lurker, first post.    i have read the previous posts regarding the water ingress problem with this emblem.  I bought my 1500 SLT the  summer of 2025 new and after reading the MANY problems with these emblems failing I decided to install one anyways.  As per a YouTube video, I sealed ( or tried to) this sign with silicone sealant around the outer perimeter joint and the holes that were already somewhat sealed on the rear plate of the emblem.  And installed the connector assembly using dielectric grease on the connectors. The installation looked great and worked well for about 4 months……then FAILURE.  Grrrrrr…… I live in the great white north and wash my truck weekly in an automatic car wash  to keep the salt off.  Let me tell you that removing the old, failed emblem is a whole different animal than removing the OEM individual letters without removing the grill assembly. Mainly because the illuminated logo is built differently than the original letters which  you can remove the red surface lettering with a knife or some kind of blade which gives access to the tabs which hold the logo onto the grill. So I had to essentially destroyed the old emblem to remove it. Doing so killed my chance of doing somekind of autopsy on the failed , old logo.  But there was plenty of water inside when I ripped it apart.  Prior to installing the new assembly I tried it with the old harness and it works fine.   Does anyone have any insight as to where the water is getting into this emblem? I intend to seal the new logo with slow curing epoxy this time around using a syringe.  I think this newer emblem may be an updated unit which I hope GM got the vendor to fix. It has an October 2025 date on it.    If this one  fails,  I am just going to revert back to the non-illuminated letters….AFTER PULLING THE GRILL.    Any thoughts on sealing with epoxy would be appreciated. Thx!   Doug  
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...