I have a 2012 GMC Acadia and I feel the starring wheel move or shake when going over bumps and holes or deepenings on roads. Theres also a dull noise kind of a clunk and I can feel it comes from the front axle somewhere. Im gonna lift the car up this weekend to try to spot whats wrong so I feel my wife and kids are safe on the vehicle before I have to leave for a deployment soon. What should I look for to find the fault and fix it. Please help! Thank you for all you do.