Can not shift to 2nd or 3rd gear

[RonC]

If it's not grinding when you try to push the lever into 2nd or 3rd "locked" it's most likely the shift tower. The transmission needs to be fully out of first gear before the gears will engage into 2nd it 3rd. A's has been suggested pull the top off and inspect. If it's grinding and can't go into gear it's in the clutch pressure plate system.