The speedometer is stuck behind the peg. - 2002 Chrysler Sebring

If you want to solve your problem, click on the link I attached
https://www.reliable-store.com/products/1997-gmc-sonoma-repair-manual

Well you know it does not have a speedo cable since you replaced the speed sensor in the transmission.
My guess would be a problem with the speedo or cluster.

look and see if the needle jumped passed the little pin on the face you might need to remove the lens and pop it back over the pin

Try disconnecting the battery again, only the + side. Wait for 3-5 min before hooking back up. Turn the switch on but not over, then start the car after a few seconds.

http://www.youtube.com/watch?v=HPvX190txvk

its probably a computer error that requires specialized tech tools to be corrected

This is an easy fix. Turn the key off. Press and hold the trip odometer reset button. Hold it until you see the odometer light up and it will say "soF" and a number. When you see this then let the trip odometer button go. The cluster will enter into a self test where all the lights come on and all of the gauges sweep. When the self test is complete then your speedometer will be back on the correct side of the peg and will work again.

Bummer. Unless you know how to remove the glass/ plastic cover, which you intern have to successfully remove, and re-install the dash board without breaking the plastic clips, you should go to a professional. Sorry buddy.

free wiring diagram will take some digging if at all posible but I can tell you that the vehicle"speed sensor" gives the computer "data" and the computer tells the motorized electric speedo to move. dead battery and bad connections freak the computer out and sometimes peg the gauges. then they stay there after the connections are fixed. this doesnt mean the speedo or any thing is ruined--just need to reset it. I think on cavalier you can hold the trip reset button in and turn the key on and it will go into a self test mode bringing things back to normal.I THINK thats how that one works--try it. if not there is a funtion in the chevy handheld computer to do it. Hope I helped. Thanks

check for a cut or chafed wire from the speed sensor at the trans to the fire wall may have caused the blowen fuse.