I have an 04.5 3500 lwb 4x4 ....seems crusing from 20 to aprox 35mph my truck shimmies (sp??) Its like the whole truck shakes but it seems hard to feel ..If I have a open pop bottle in the holder it shakes the crap out of it...it allmost feels like a torque converter...anybody else has this problem??? Thanks Kurt

 

U-JOINTS MAN... our LWB are prone to it...get some "TIMKIN"S GREASABLE U-JOINTS AND THE STICKIEST GREASE YOU CAN FIND

Look at your Carrier bearing too see if it is centered or needs to be dropped 1/2 inch

EASIEST Way to check the joints...go hard around the neighborhood then get under and feel the caps for heat

 

Carrier bearing was just replaced by dealer..I had a "HOWL" ...I just went to look and the carrier bearing is loose in the rubber...is that normal??? Thanks