2019 Silverado won't power the rear camera on my trailer

I have a travel trailer with a rear facing camera that uses a bluetooth monitor I plug into the cigarette lighter receptacle on my tow vehicle. The camera worked fine on my 2002 Silverado, on a 2008 Toyota pickup and on a 2012 Enclave. However, on my 2019 Silverado 1500 High Country I get a “No signal” message 95+% of the time. It will go 15-30 seconds with “no signal” and then 1-2 seconds with a clear video.

My Chevy dealer hooked up another 2019 Silverado to see if it was just my truck and we got the same issue. My service manager contacted GM’s technical assistance and as soon as they heard it was not a GM camera/monitor pretty much blew him off. An RV friend sent me this article that may explain things to someone with tech savvy, but that’s not me:

https://gm-techlink.com/?p=11176

However, that article does have this quote which makes me think the truck isn’t providing enough current:

“Vehicles equipped with a Trailer Lighting Control Module cannot drive as much current on each circuit when compared to the non-Trailer Lighting Control Module trailer lighting system. The Trailer Lighting Control Module drives four trailer circuits using four solid state drivers that are fed from one 30A lighting fuse. If the total current on the four circuits overloads the fuse, it will fail. If any single lighting circuit exceeds the driver threshold, it will deactivate the output for the balance of the key cycle and a reactivation of the lamp load is required. Individual DTCs are activated for each circuit and that load is turned off due to high current. If a trailer draws too much current, it may be helpful to change some or all of the trailer lighting to LEDs.”

Any help would be appreciated because GM isn’t going to.