Air conditioner blowing hot air

2002 GMC ENVOY
218,000 MILES
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FORGIVENMH41
  • MEMBER
  • 1 POST
Okay, on my wife's vehicle listed above the water pump went out so I changed that and the thermostat. then the radiator had a crack I noticed so I went back and replaced that. then when I started it up the A/C was blowing real cold air for about 2 minutes then started blowing hot air, but before all the work it was cold. what would cause this?
Jun 9, 2020 at 12:41 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good morning,

You may have a leak in the system and the freon leaked out.

https://www.2carpros.com/articles/air-conditioner-leak-detection

Does the compressor engage when you turn it on?

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Do you have a set of gauges that will tell the high and low side pressures?

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Roy
Jun 9, 2020 at 2:30 AM
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