okay so no one shoot me because im ignorant. im doin 120 down the highway from classes last night and all the sudden my car decides to find another gear....wtf? ive been at 125 before and i tought id maxed out, even though it was still pulling a little bit. but this time it shifted back to like 4K and just kept on chugging along...... how many gears does the aod-e have? is it 4 gears with o/d being a fifth? or 3 gears with o/d being a 4th? or if im wrong what the he** is the o/d? im completley clueless about autos.... and why has it never shifted down like that before? any help would be greatly apreciated.