How do I tighten the wiper arm on the driver side of my 2005 Chevy Cavalier? on 2005 Chevrolet Cavalier

My wiper was pulled over the driver's door by some person walking past my car and now the whole wiper arm unit is loose and will not work. I replaced the blades and was told the wiper arm probably needs tightening.

Asked by for the 2005 Chevrolet Cavalier
At the point where the arm meets the cowl there is a nut under the black cover, lift this cover to expose the nut and tighten with wiper arm in the same position as the other one. (A person cant have nothing anymore, what a shame)!!
Hope it did not damage the wiper transmission.
1 more answer
I agree with wetry