YoungGun
Floating in Nebraska
Ive got an 08 LMM with wehrli custom fab twin kit s475 over stock, Duramax Tuner Dsp5, air dog 165, stock trans, 4'' exhaust. Lately ive got this vibration at idle that's pretty noticeable inside the cab and once outside I can walk around to the passenger side and hear the bumper buzzing because of it. I can feel it in the s475 if I hold the compressor housing. Pretty much the whole passenger side vibrates. I cant figure out where its at, the support bracket seems fine everything is tight. Could it be a motor mount?