Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.working after noon till just after midnight.
When the front AC stops is the cold air stopping or all of teh air flow or is the screen on the HVAC going blank?
Thanks, ***** ***** the AC circuit if needed.
To figure this out you need to start figuring what is working and not to blame to have a direction to see what is possible to blame. Step on will be removing the AC relay when the AC is commanded on but not working. You should see 2 power pins and one ground signal pin. Most likely this ground signal is the issue. It comes from the PCM. If that is the case then the HVAC control or the PCM will have codes stored telling you if there is a pressure sensor reading issue causing this. Can you do these tests?
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