We went to an out of town zoo over the weekend and the exit is going up a short but steep incline. When going up I get this very noticable shutter, vibration coming from underneath but thats the only time it does it. This is the 3rd weekend in a row weve been there and its done it everytime. Is there anything I could check? Normal driving is non issue, and going up this incline were only going like 5 mph or so. Im stumped.

 

Does it feel like a driveline, engine, or body vibration?

 

Id say probably driveline, definately not engine.

 

Being that it's at low speed should narrow it down quite a bit. I know you said it only happens there but is there any slack in the shifting or clunking when you put it in gear? Have you R&R any parts recently that we can either rule out or possibly be the cause of this?