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Old 06-29-2020, 10:21 PM   #1

vtirocz's Avatar
Drives: 2017 Camaro 1SS M6
Join Date: Apr 2015
Location: Indy
Posts: 2,195
AC Blowing warm air - compressor not engaging

I've got 12k miles on my car (bumper to bumper warranty expired on March 17th) and ran into my first real problem with the car. With the AC on the lowest setting, it's blowing warm air. I found that the compressor clutch doesn't appear to be coming on. AC clutch fuse looks good (though I haven't tested the relay), cooling fan turns on, and I can hear the blend door(s) inside appear to be moving when going from 'hot' to 'cold'. The AC condenser does have some bent fins (apparently from road debris), but nothing major.

I'm thinking a likely cause is that it's low on refrigerant, although I did not see any obvious signs of leak even with a blacklight.

Questions for the forum:
  • Does GM use dye (that would appear yellow under a black light) in the factory fill R1234-yf refrigerant?
  • What are the other possible causes? AC control module?
  • Since my car has such low mileage (1/3 of the limit) and so close to the time threshold (3 months over) has anyone had luck with getting a "good will" repair or at least assistance

I'm thinking for my next step, I need to get a pressure gauge for the new style R1234-yf connector to confirm if it's low. If it's low, then possibly buy some R1234-yf compatible dye and refrigerant, fill and confirm the system works, then pinpoint the leak with a blacklight. If I pinpoint where the leak is coming from, aside from replacing that faulty component, what else would need to be replaced (filter/dryer too?)?

I'd appreciate any feedback that might help resolve this.
2017 Camaro 1SS, M6, Hurst shifter, Hyper Blue, NPP, Gray Split Spoke Wheels

Best 1/4 Mile: 12.28s @ 115.5mph
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