@secelit3 You can replace the existing sound yourself. You just need WinRar to open .pak files and place your new sound in the appropriate location in the sounds.pak (I think that's what it's called).
I'm on console
Yes please fix this sound issue on the chevy, I love the truck but stopped using it immediately due to the annoying sound loop. It's really bad in low gears it just keeps revving up over and over and over, enough to drive any man insane. Again it's a pity since it's a cool truck.