cinci5

I know this is a tad old but McGard makes all the OEM black lug nuts for GM. I used to work there, they might have what you want. they are M14X1.5 black PVD coated or Black chrome. Try calling them.

My 15 2500HD has the screws did it in driveway at night. l changed to HID setup so it was critical for height. Bright as heck and very definitive line to see. Also Morimito fogs needed adjustment they also have screws.

I know this is old post but there is a TSB out about “ shark fin” leaks. I’ve got a ‘15 but didn’t start leaking till last year. Out of warranty so siliconed all lights and fin. Still a leak? Come to find out windshield was leaking filled top around windshield with trim caulk.

My lower ones come on as drl and brighter but at night they both come on at lower rate. Gotta find ballast and see if is controlled or switched. Gonna wait till a little warmer as have to trace daytime running lights first. Suppose to frigg*n snow this weekend.

Yep sorry !But I suppose the same principal as yours.

I was a thinking the same thing, did the diode mod last night. Gonna study this for a bit but noticed one row of led's has a 2 stage brightness. Gonna try and find lead from ballast to light to trace and see if I can get both upper and lower to fire the same on my GMC. For what it's worth I unplugged and stripped back alittle of the black wire wrap for easier access to get at the wires.