THE A/C DOES NOT WORK GOOD WHILE THE CAR IS AT IDLE. WHEN DRIVING THE CAR THE A/C WILL BEGIN TO COOL. WHEN DRIVING ON THE HIGHWAY AND I HAVE TO BREAK IT STARTS TO BLOW WARMER AIR. WHEN STOPPED AT A RED LIGHT, STOP SIGN, THE A/C WILL STOP COOLING AND BLOWS WARM AIR OUT OF THE VENTS. I WENT TO THE DEALERSHIP AND DO NOT KNOW HOW TO FIX THE PROBLEM. TOLD ME THAT THE MECHANIC/TECHNICIAN COULD NOT FIND ANYTHING WRONG. THE DEALERSHIP IS NO HELP AND I JUST WANT MY 17000 CAR AC TO WORK NORMAL/ RIGHT. 2013 CHEVY SONIC 2LT MODEL WITH A 6 SPEED AUTO TRANSMISSION. PLEASE HELP THANKS! *TR