How To Fix Chevy Trax 2016 Air Conditioner Only Blows Hot Air 

Thanks for watching. Getting the square key gear aligned can be tricky. A tip for other viewers is to screw in the bolt first to about 80%. That allows some wiggle room to align the square key by manually spinning the white gear into position. After the gears are set properly and the knob can spin end to end then complete tightening the bolt.

Hello. Thanks for watching. This fix is for when the A/C is working properly but still blows hot air. Sometimes the cause of that is the wire on the black gear near the glove box or the wire connection on the heat/cool knob side. The video tries to explain what to check on each side. If your question is about the A/C on/off button, then one thing to check is if you can hear the compressor starting/stopping when you press the button. If you can't hear/feel the compressor turning on/off there could be other reasons for your problem. RU-vid has many videos for other things to check for A/C problems. One thing that can affect the Trax A/C is the coolant temperature sensor (most likely on the engine side). If sensor is bad/reading too high, then it can prevent the A/C from even turning on. If it reads too high, then car can also throw some weird code and goes into "limp" mode where the engine barely runs. That is a cheap part to replace and easily accessible. One symptom of a bad temperature sensor is starting a cold engine but the engine cooling fan turns on quickly after starting the car. That occurs because computer thinks temperature is too high. The A/C won't work at all to blow cold in that situation. NOTE: This is not professional advice. If you aren't sure what you are doing, then it's best to seek professional help/diagnosis from qualified mechanics.