Silver-ado

Question for the electrical gurus... I’ve installed a flatbed on my 2016 GMC Sierra 1500 SLT. All of the lights on the bed are LED as well. I have no issue wiring the lights to function properly, however, I don’t know what to do with the red BCM signal ground wire. It makes no difference if I tie it into the ground circuit at the light or not I still get hyper flash. I chose to wire into the existing tail light sub harnesses to avoid the hyper flash I expect if I were to wire directly into the trailer plug. How closely would I have to match the load into the BCM to prevent hyper flash? I didn’t expect to have to add resistors as you would in a typical incandescent to LED conversion. LED to LED I didn’t expect to have an issue. Any help would be much appreciated!

Have any of you guys had an issue with moisture in these LEDs? I’ve seen that desiccant packs work well in the non-LEDs, can the turn signal socket be removed and a desiccant pack put in? Otherwise these are sealed units...

Nofastcar, was the dealer able to find anything?

Nofastcar, did you ever find a fix for this? I'm right around 5,000 miles now and have developed this same issue. I was thinking it was more of a transmission issue but I'm too having the "clunk" when downshifting and coming to a stop. Dealer says it's normal, it's getting really annoying... Thanks,