will check the mounts next time i get a chance. Would is there any reason it only seems to do it in with cruise control?

Hey All, Was driving my wife's 2009 Vibe (1.8, Auto, 200k Miles) the other day. Was on a slightly hilly road doing about 60mph with the cruise set. When climbing a couple of the hills it downshifted so violently it was like hitting a small deer. Never slipped or anything like that just was a big BAN...