I have 2 Brand new Bilstein 4600 shocks -24-196437 - These fit all 2011-2020 HD Front shocks.
I ordered a full set and installed the rears. The fronts I never got around to. Brand new in BOX..... $ 100 the pair plus shipping. Detroit area for LOCAL pickup...
THese REALLY make a smoother ride than the Ranchos.
The 6.2 LT engine has an aggresive cam. It does not idle dead smooth like the LS engines. It is the same cam as the camaro SS so its a performance cam.
Max tow with a 6.2 get the 10 speed transmission. 1st speed is 4.70 ratio.
The Rancho shocks I have on my 2015 2500 HD suck. Replaced with Bilstein, much smoother ride.
Flying whiskey- You need to tel us more. Does it click when you turn the key- crank slow or not at all.
Document this all.
The starting circuit is seperate because of the amps. Is it happening with BOTH keys?