Is the blower motor bad or could it be the resistor when I bang onit it bearly s on 1996 Dodge Avenger

blower motor just stopped blowing.but if I reach under the dash abang on this little box thing that seems to be attached to the motor it will blow very,very little air and it sounds like it cluncking.any help would be greatly appriciated

2 answers 1 comment
you either got a bad connection or you need a new motor
thanks,I pulled the motor and connected it to a battery and there was no movement.So I took a chance and got one at a wrecking yard for half price.hooked it up and OH, YEA!!! it worked.Good to go now.thanks for all the advice.
i agree w/ good guy