Weird No Texture on some of the parts

Soo hello again , i came with the problem that i got recently (again) where when i choose any Truck (In this case the new Gavril) some of the parts have yellow "No texture" and also weird white wheel , this problem also happends on the Gavril T Series where there is more 'No Texture". If someone have something just write it down and im gonna anwser and look at it tommorow :)