Spend some time under your rig at home and look for possible issues. Grab the driveshafts and see if there is any slop in the U-joints or serious rock gashes. Replace busted engine and tranny mounts. Check the steering ball joints for slop and make sure the box is securely mounted to a frame with no cracks. Look for leaks from bashed oil pans, trannies, and even shocks. While you are down there do a complete lube change to anything that carries oil or fluid. Keeping the insides of all the components filled with fresh juices never hurts and is simple insurance against problems.