2000 GMC C SERIES Steering Problems

I BOUGHT EXTENDED WARRANTY WHEN I BOUGHT TRUCK. IN MAY 2003 TRANSMISSION STARTED TO GO AND WAS TOLD BY DUTTON MOTORS IN RIVERSIDE THAT GMPP WAS NOT GOING TO PAY THE CLAIM BECAUSE WE MISSINSTALLED A TRANSMISSION FILTER. APPROVED DUTTON TO FIX CAR AND FIND OUT THEY NEVER PUT IN A CLAIM TO GMPP. CALLED DUTTON TO SEE WHY AND THEY ENDED UP HAVING GMPP ADJUSTER OUT WHEN TRUCK WAS ALREADY FIXED. GMPP DENIED CLAIMING WRONG FILTER INSTALLED. WE WERE TOLD BY DUTTON FILTER WAS INSTALLED WRONG. TWO DIFFERENT STORIES. WE PAID TO HAVE TRUCK FIXED BUT COMPLAINED ON CUSTOMER SATISFACTION CARD. NEVER HEARD FROM GM AGAIN. JULY 2003 EXACTLY TWO MONTHS AFTER LAST REBUILD. MY KIDS AND I WERE IN CARPOOL LANE GOING 70MPH WHEN TRANNY SOUNDS LIKE IT SUCKED UP A THOUSAND COINS. ALMOST IN CAR WRECK WHEN I PULL OVER AND GET OFF FREEWAY. TOW TRUCK TAKES...