TJP249

Hello Jesse, Been researching this myself for a 24 HD that did not come with 9L7 from the factory. So far there is no updated documentation for this that I can find on the GM Upfitter website. That said, there is a similar thread one level up in the forum where I shared my recent finding on 24' part numbers: https://www.gm-trucks.com/forums/topic/263279-i-have-the-dealer-supplied-auxiliary-switch-upfitter-package-how-to-get-through-the-firewall-on-a-2024-3500-hd-gas-engine-truck/

So actually none of the part numbers line up from the 23's to the 24's Stopped by a local dealer who had a 24 in stock with 9L7 and was able to get part numbers off each component. Should have seen his face when i pried the switch bank out of the dash! New part numbers: 87866808 - Switch bank-Black (Would be different for other interior colors. Not showing as available on GM parts 84810191 - Power harness About 36.00 Not sure what has changed on this part. Should have taken my 23 cable for comparison 86812139 - Fuse/Relay panel assembly About 100.00 Has a longer cable to switch bank as the switch location has changed

Understood, I thought they didn't install the switch panel in the 23's and earlier, so was curious if anything else changed. I have all of the upfitter bulletins for the 9L7 as well as the snowplow prep w/roof wiring.

That's interesting. Did they also mount the fuse/relay panel under the dash? Or did they just leave the connector that goes to the switches unterminated under the dash? They should install the whole kit at the factory like Ford does. Tom

Doug, did you ever figure this out? I'm in the same boat. Still nothing updated on GM Body Builder website. My guess is at the bottom of the wiring passthrough in this picture. If you have the full kit in a bag, can you send me the part numbers of the individual pieces, most importantly the actual switch bezel? I am actually installing mine in an aftermarket center console. Figured I would just order the existing parts from a 23, but the bezel around the switch module is contoured for the left-hand knee panel and won't sit correctly on a flat surface. Hoping the 24 version will work better. Thanks, Tom

Thanks for the response. I was able to grab one (Not Greenlee) off Ebay for a good price. Just waiting truck now!

So I am finalizing a deal on a new 24 Silverado HD that has everything I want minus the cab lights. Found this thread that covers everything. Just wondering if anyone here has the tool I could rent./buy (Pay it forward) ad I don't want to spend 300 on the tool to get this job done, and rather not go down the path of using a rotary tool. https://www.gm-trucks.com/forums/topic/248996-how-to-add-cab-lights-to-a-2020-silverado/ Thanks