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Message: <blockquote data-quote="symplman" data-source="post: 29345" data-attributes="member: 10971">2500 question. This will be long. I recently lifted my 02 2500 suburban. We put on a cognito 6 inch with fox shocks. Im getting a vibration at around 40 and it goes away around 75. I also get what feels like binding when i accelerate from a stop and turning (very random). I also get a condition like its in 4x4 on dry pavement. Tire binds and even chirps from time to time also while turning and accelerating. we've been all over this thing and cant figure it out. heres what we have doneFront HubsAxle shafts with spacers and without. GMT900 axle shaftsU joints then a custom drive shaft with 3 u jointsNew transfer caserear diff rebuiltrear seals and bearingsFront seals and bearingsrear drive shaft balanced and u jointsnew tires with road force balancealignment x2hub ringsDif is lowered for geometryrear is wedged for geometry Im sure im missing something. Any pro tips would be great</blockquote>