2002 SATURN SC Power Trainautomatic Transmission Problems

2002 SATURN SC1 LOST ENGINE--OIL IN COOLANT AT 80,000 MILES. THE MECHANIC THAT DISASSEMBLED THE ENGINE STATED THAT THE CAMSHAFT JOURNALS WERE WORN SO BAD THAT THE ENGINE COULD NOT BE RE-BUILT. REPLACED ENGINE 5 MONTHS AGO, LAST WEEK, AUTO TRANSMISSION STOPPED ENGAGING REVERSE GEAR. DISCUSSED WITH LOCAL SATURN DEALER WHO OFFERED NO HELP. THIS IS MY DAUGHTER'S CAR. MY CAR--2002 SATURN SC2 HAD TO HAVE AN ENGINE OVERHAUL AT 46,000 MILES DUE TO BURNED VALVES IN #2 CYLINDER. EXTENDED WARRANTY COVERED REPAIRS. OIL CONSUMPTION PRIOR TO OVERHAUL WAS EXCESSIVE (QT EVERY 1000 MILES--DEALER SAID NORMAL) MY AUTOMATIC TRANSMISSION HAS AN INTERMITTENT EXTREMELY ROUGH DOWNSHIFT, WHICH WAS REPORTED TO SATURN DEALERS 4 TIMES WHILE IN WARRANTY. EACH TIME, THEY SAID THEY COULD NOT DUPLICATE THE PROBLEM. OUR FAMILY BOUGHT THE CAR NEW, AND RECOMMENDED MAINTENANCE HAS BEEN PERFORMED. AT THIS TIME, I FEEL THAT SATURN HAS SOME WELL DOCUMENTED PROBLEMS...