I checked the climate control and AC temperature yesterday with a digital thermometer and also with infra red thermometer. I set the knob to "LO" (should be 57 deg F). The air output temperature at the register just to the right of the steering column was reading 57. The ambient temp was 89. This was 5 min into my driving the truck. I then set the thermostat to Auto 70, and it maintained that temp setting. Very cool!