{"text":"Need help.I bought this ex Werner Pete 379 2 1/2 yrs ago.It has a 475 hp c-15,a not so popular super 10 and 3:55 rears.It vibrates like crazy.I've done king pins(1 1/2 yr ago);hanger,leaf springs bushings(1yr ago);all shocks;carrier bearing,;all u-joints;steering gear box(had too much play);alignment;balanced steers and bought centramatics.Vibration starts really bad at 50mph and decreases as I go faster but do not desappear.Upgrade,downgrade,flat no diference.I noticed jakes will increase it a little.At 50mph,or any speed on highway around turns the whole drivetrain vibrates,the rest of time it's just the nose.This is one of the few trucks I've seen that Peterbilt didn't put a bracket to hold the transmission to the frame.Can't believe it could be the crank ,I just pulled 45000 lbs of potato thru Wolf Creek Pass,CO.It has cupped my steers twice 1 yr apart keeping 110 psi.Any ideas will be appreciated.","pics":"[]","canComment":true}
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