1999 C/K Full-Size Pick Up 2500 4x4 A/C problems

Discussion in 'Chevy C/K Truck Forum' started by cooleyman49, Jul 10, 2012.

  1. cooleyman49

    cooleyman49 New Member

    Yes last 3 years my A/C has worked wonderful but this year nothing blows hot air it sounds like clutch is cutting on but its not i have replaced the relay and the freon is good atleast presure is. can anyone help an old roofer.
  2. Curky

    Curky Epic Member 5+ Years 1000 Posts

  3. Crispyt

    Crispyt Rockstar 100 Posts

    Make sure that the pressure switch is good. A lot of times they will go bad and won't sense that the pressure is there so it won't put power to the clutch. If you have a reqular 2 pin connector to your clutch, unplug it and take 2 test leads to the clutch from the battery and it will turn your clutch on if its good and that will giuve yo the chance to see if your a/c is blowing cold air. If so its probably your pressure switch.

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