What could be cause of not going into reverse or drive? on 1997 Chevrolet Suburban 1500

Less than a month ago we had the reverse clutch repaired on the transmission because it would not go in reverse. Been driving a month with no further issues until today. Just had motor replaced 3 months ago along with new power steering pump and the transmission issue. Please help! My son is stranded in Pennsylvania with no ride.

Asked by for the 1997 Chevrolet Suburban 1500
Out of warranty for trans repair?