2024 Sierra HD Wire Diagram

[Nick McDermott]

Hey guys, 

 

I am looking to tap my tailgate light bar into my tail light and wondering if anyone has the color coding for each wire (left turn, right turn, brake, ground). Also, do both sides of left and right turn or do I need to run one long across to the other side? 

THanks! 

[Nick McDermott]

Anyone know of a resource I can call to find the diagram? 

[64BAwagon]

You might find the info here. Light reading, its over 1000 pages https://www.gmupfitter.com/wp-content/uploads/2023/05/24_Silverado_2500-3500HD_Body_Builder_Manual_2023May11.pdf

 

Start at section 2-27. If youre going to print it the pages are 43 and 44

Edited November 2, 2023 by 64BAwagon

[Nick McDermott]

5 minutes ago, 64BAwagon said:

You might find the info here. Light reading, its over 1000 pages https://www.gmupfitter.com/wp-content/uploads/2023/05/24_Silverado_2500-3500HD_Body_Builder_Manual_2023May11.pdf

 

Start at section 2-27 

 

Yeah I tried finding it here and boy is it tough hah. I will try again thanks 

[64BAwagon]

If you need to print the 2 pages I think they are 34 and 35. I printed them for my reference stuff I keep in the shop. I wired a marker strip with clear LED's for backup off of my left tail lamp assy but I dont recall the color coding. 

I can read basic stuff on these prints, I would study more if I wasnt at the age I am and didnt have kids that are way beyond my skill level at this. They took what I knew and went screaming past me years ago. I did a lot of wiring on trucks and have practical 12V skills but schematics are a whole othe rabbit hole. LOL

 

Edited November 2, 2023 by 64BAwagon

[MattKatuscak]

Hey guys. I wired up a LED tailgate light bar and connected it through the wiring harness using the color coded diagram. I’m now having the issue that the system thinks a trailer is hooked up and is giving me trailering camera views when turning and indicating at times to check trailer tail lights. Any thoughts on what I could have Mixed up?

[newdude]

1 hour ago, MattKatuscak said:

Hey guys. I wired up a LED tailgate light bar and connected it through the wiring harness using the color coded diagram. I’m now having the issue that the system thinks a trailer is hooked up and is giving me trailering camera views when turning and indicating at times to check trailer tail lights. Any thoughts on what I could have Mixed up?

 

 

Trailer lighting control module is seeing a trailer from the added resistance of the light bar.  Can't tie them into the trailer lighting.  This is why the Putco one that GM sells with a GM part # has a plug and play harness that ties the bar into the tail lights and not the trailer circuit.  

 

What brand bar is it and what model?  

Edited June 25 by newdude

[Alec H]

On 11/1/2023 at 12:30 PM, Nick McDermott said:

Hey guys, 

 

I am looking to tap my tailgate light bar into my tail light and wondering if anyone has the color coding for each wire (left turn, right turn, brake, ground). Also, do both sides of left and right turn or do I need to run one long across to the other side? 

THanks! 

I believe the ground wire is black and the lighter green wire is your reverse lights.