I was driving the other night and reset the top odometer on my car after i pumped gas. The next day i noticed it was stuck. Anyone have a solution?

 

In my Mercury Cougar the gears for the odometer shattered causing it to freeze. About all I can suggest is take it apart and inspect the gears. There were replacement gears available for the Thunderbird/Cougar, but I don't know where/if you could find them for the CL.