i bought a 2018 ram 4x4 express 3 months ago. Bought brand new and 1 month after buying it I started hearing a chirping whistling noise from left front side. It starts at 35 and it sounds like a wheel bearing but bearing was just replaced at dealership yesterday. New brake caliper has also been installed. I have had it in shop 4 times now and they have yet to find the problem. I’m starting to get pissed and fed up about it and as of yesterday they realize it. The strange thing is when it starts making the noise at 35 mph I can shift into 4 high and it completely goes away. Can then shift back into 2wd and and in a few seconds it starts again. Nothing changes the pitch. Brakes don’t stop it and the only thing that does make it stop is 4wd. I honestly think the dealership doesn’t have a clue what it is. They say they can’t find anything wrong. The only thing that has been modified is a leveling kit was installed correctly but it was doing this before install. Any ideas what may be causing it. I’m lost