2007 CHEVROLET EXPRESS 3500 Electronic Stability Control Esc Problems

THE TRACTION CONTROL SYSTEM HAS BEGUN TO ACTUATE INTERMITTENTLY UNDER NORMAL DRIVING CONDITIONS. THE IMPROPER ENGAGEMENT OF THE TRACTION CONTROL SYSTEM IS USUALLY ACCOMPANIED BY AN ALARM AND FLASHING ABS WARNING LIGHT WHICH MAY OR MAY NOT RESET. THE VEHICLE WAS PURCHASED NEW IN DECEMBER OF 2006. THE SYSTEM FUNCTIONED CORRECTLY FOR THE FIRST TWO YEARS OF SERVICE AND THEN FAILED IN FEBRUARY OF 2009 WITHOUT WARNING. THE SYSTEM WILL ACTUATE EITHER WHILE DRIVING IN A STRAIGHT LINE OR MAKING TURNS ON DRY PAVEMENT. THE SEVERITY OF THE EVENT VARIES. SOMETIMES THE SYSTEM IS BRIEFLY ENGAGED WITHOUT SIGNIFICANT DISRUPTION TO THE VEHICLE DYNAMICS. AT OTHER TIMES, THE BRAKING IS APPLIED AGGRESSIVELY AND THE THROTTLE IS FULLY ATTENUATED. THIS CAN RESULT IN VARIOUS DANGEROUS BEHAVIORS SUCH AS VIOLENT LURCHING OF THE VEHICLE PULLING AWAY FROM A STOP LIGHT, LOSS OF POWER MERGING ONTO THE FREEWAY, SIGNIFICANT SLOWING OF THE VEHICLE BELOW...