Model: Suburban 1500 2WD
Engine Size: 5.3
Refrigerant Type: R134a
Country of Origin: United States
Last summer the AC started to become intermittent. I removed the shims, and then ended up replacing the magnetic clutch with a new one. As soon as I did, the system worked flawlessly and has done so until today when it kicked off while driving and hasn't restarted. Am I looking at replacing the compressor now or is there anything else that I should do first? If I do have to open up the system, is there anything unusual because of the rear AC system? Or is it just more line to evacuate and refill?
How are you sure the clutch is the problem now? Check for voltage to the coil.
Perform a complete electrical diagnosis of the clutch system. It appears that the problem could be electrical. The clutch engagement is controlled thru the BCM/AC controller. A simple new clutch may not be the answer, nor a clutch replacement. Exchanging parts to determine the solution to a problem is not a acceptable repair procedure. The cause of the primary failure must be determined or a repeat failure will occur....'never have time to do the job right....but always got time to do it again.....!!!!
Also, it is not just 12 volts to the coil...this is a ground side switching unit...so simply having 12 volts to the coil may not be the only answer. Evaluate the system. Complete the repair.
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
I should have said "voltage at the coil". If a coil has two wires going back to the electrical system, measure the voltage between them (with the engine running and the A/C turned on).
You're right, I need to check the electrical first. It's just that it has been flawless since I changed the clutch, and then the same problem came back so that's where my brain went to. This is why I don't do this for a living - appreciate the help you guys provide.
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