Ripper3494

hi, im new to this forum and new to these engines, but not new to cars...

my issue is that i have a 6.0 lq4 out of a 2004 silverado 2500hd and it has terrible vibrations around 1500 rpms, and 2500 rpms. It does this in neutral, park and while driving. i've checked my motor mounts and transmission crossmember mounts and they are all good and have under 2000 miles on them.

any thoughts?

thanks in advance,
Erik

GMtechmatt

are you driving when the vibration occurs?

GMtechmatt

opps sorry missed that part have you checked the back of the balancer to see if the rubber is broken or missing?

Ripper3494

never mind i figured it out... somehow my bellhousing bolts had loosened a little bit o.O

Ripper3494

thanks for your help though, ive never had trans bolts come loose in my life...