I have a 2001 Saturn Sc1 with 135,000 miles. I replaced the plug wires about 4,000 miles ago. I got in it to drive it the other day and the transmission will barley engage. You can shift to any gear and it won’t move over 10 mph. What could be causing this?

 

Sudden onset?
SES light on? Codes?
Does the shifter feel right? Or is it floating around and not centering?
What are the rpms doing at 10 mph? And if you try to push it past 10 mph?