2002 Chevy Impala, wipers stuck in the vertical.

We had a few inches of very wet/heavy snow this morning. My daughter chose to activate her wipers instead of using a broom. She believes it wasn't so much the up-swing under load as much as the blades being kept from returning down all the way to the stops. I checked the 25a fuse and it's good. The wipers work but return to the vertical when done. The fuel gauge is swinging erratically as well. I finally disconnected the pos batt term for five minutes to no avail.

Thanks for any help.

2002 Chevy Impala, wipers stuck in the vertical.