AC blowing hot air. I had a compressor replacement and fully checked whole system. Worked for a few months and did it again. Then I replaced the cue system but it keeps the same.
What else was replaced with the compressor at the same time??
Was the remaining system fully flushed??
What are the pressures on the manifold gauges??
Any codes in the system??
Is the compressor turning on and cycling??
Does the blend door fully move from hot to cold??
Lots of questions needing to be answered, and there will be more…
If the DIYer’s are curios, CUE = Cadillac User Experience, basically the head unit/infotainment center…
The compressor in this vehicle shouldn’t cycle on and off.
The AC system in this vehicle isn’t the CCOT system that GM use to use.
If the compressor is cycling, it means the system is low on refrigerant.
Tester
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So maybe bad blend door actuator. The blend door directs air across the heater core or AC evaporator as selected.