Looking at wife's 2008 Saturn Vue. The passenger wiper arm doesn't move. Took off cover on cowl. I'd like to harm the person who designed those plugs with the center part that never turns out when you want to remove the plugs. Anyway the arm coming from the passenger wiper pivot to fasten on the linkage at the other arm going to the arm for the drivers side has come off. Looks like that maybe there should be a push on clip or something to snap it on the ball sticking up from the wiper motor. Went to our local Chevy dealer and they say I have to buy the whole new arm assembly. Any ideals ? Thanks