I will try that suggestion tomorrow (but on axle stands as I don't have access to a hoist). Its tough debugging these things while driving! The truck is pleasant to drive below 30, but from that point onwards it just gets steadily worse. The vibration can be felt in the seat of my pants and in the steering wheel. By time I hit 50 its loud, and the vibration is fairly fast, and nothing makes any difference. Clutch in or out, under load or coasting, in gear or in neutral, no difference whatsoever! Hopefully the axle stand test tomorrow will shed some light on things. Thanks!
