WHILE SLOWING DOWN TO MAKE A TURN, USUALLY ALWAYS USING TURN SIGNAL, MY TRUCK WILL COMPLETELY SHUT DOWN IN THE MIDDLE OF THE INTERSECTION WITH NO WARNING. THE ENGINE SHUTS DOWN AND ALL ELECTRICAL IS LOST. LUCKILY I HAVEN'T BEEN HIT BY ANOTHER VEHICLE WHILE TRYING TO RESTART MY TRUCK IN THE MIDDLE OF THE INTERSECTION. AFTER I GET TRUCK STARTED THERE ARE NUMEROUS ERROR CODES IN THE DISPLAY: OPEN AND CLOSE DRIVERS SIDE WINDOW, STABILATRAK, STEERING WHEEL ASSIST, STABILATRAK REDUCE SPEED B/C OF STEERING ASSIST, 2 KEYS PROGRAMMED. ALSO WHILE TRAVELING AT HIGH RATE OF SPEED (70-80 MPH) ON HIGHWAY THE STABILATRAK ERROR WOULD APPEAR WHEN I PUT TURN SIGNAL ON TO CHANGE LANES BUT TRUCK HAS NOT YET SHUT DOWN UNDER THAT CONDITION. I HAVE TAKEN MY TRUCK TO 2 DIFFERENT CHEVROLET DEALERS FOR THIS DANGEROUS PROBLEM BUT THEY HAVE NOT BEEN ABLE TO FIND THE PROBLEM. THE LAST TIME THE TRUCK SHUT DOWN ON ME WAS 9-19-2018 AND THE TRUCK DID NOT START RIGHT AWAY AND MY 4-WAY FLASHERS DID NOT WORK WHILE I WAS STRANDED IN THE INTERSECTION.