BUICK/CHEVROLET/GMC/PONTIAC/SATURN/SUZUKI: ALL WHEEL DRIVE SYSTEM INOPERATIVE AND DTC C0550 SET. VARIOUS CONCERNS MAY BE RELATED TO A LOW BATTERY SUCH AS BUT NOT EXCLUSIVE TO A NO CRANK OR SLOW ENGINE CRANK CONCERNS OR MAY HAVE RECENTLY HAD TO HAVE THE VEHICLE JUMP STARTED. THIS MAY OCCUR DUE TO LOW VOLTAGE PRESENCE IN THE SYSTEM. *PE UPDATED ON 06/16/2011. *KB