My Cadillac CTS has been blowing warm air for the past few days and with this heat I am basically driving in an oven. I took it to a garage near my place in Sharjah and the guy said the compressor needs replacing which would cost a small fortune. He did not even do a proper check, just listened to it for a minute and gave me a number. I am not convinced that is the real problem because the AC was working fine until last week and then suddenly stopped cooling. A friend told me there are specialists who actually know Cadillac systems and will diagnose properly before throwing parts at it. I came across https://caracrepairsharjah.ae/brands/cadillac/ while searching for options and it lists workshops that deal specifically with Cadillac models which seems more promising than a random garage. How do I know if it is really the compressor or just a leak somewhere? What should a proper AC diagnostic involve because I do not want to pay for a full replacement if it is something small. Also how long does this kind of repair usually take because I need the car for work. If anyone has had AC work done on their Cadillac in Sharjah please share your experience.