Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2007 Scion Tc No AC and High Pitch Squeal › Reply To: 2007 Scion Tc No AC and High Pitch Squeal July 7, 2021 at 8:40 am #991750 Richard KirshyParticipant Before replacing the entire compressor you may want to see if only the compressor clutch is the issue. These can usually be replaced on their own without having to replace the entire compressor.