15 Lml vibration not factory issue

Jan 30, 2011
59
0
6
Sacramento ca
So I randomly fixed the vibration I drained the fluid which btw I changed it and tranny when I did my gears bought oil from Gm for this transfercase well I drained it to see if there was metal shaving or not and I didn’t have any of that oil so I put in 5-30 motor oil and vibration is gone *♂️