1996 sunfire trans won't shift

I have a 1996 sunfire 2.4 dohc with 4 speed automatic transmission. I have 1st gear and reverse,also the speedometer quit working at the same time. The car worked fine went to store , went to leave speedometer didn't work and would not shift out of 1st gear I changed the oss but that didn't help also checked trans fluid all is good.:screwy:

check to see if the linkage has come undone.