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2003 Sierra AC shutting off?

Discussion in 'GM Electrical Tech' started by BigR, May 4, 2010.

  1. BigR

    BigR New Member

    2003 Seirra 1500K, 5.3, AC works fine when truck first starts up. Then after about 5 to 10 minutes the compression turns off. Sometimes it will turn back on. If I turn the truck off then restart AC will work for another 5 minutes. Could this be a low pressure switch or another control?

    Thanks, Ryan
  2. murdog94

    murdog94 New Member 1000 Posts

    Sounds like the low pressure switch.. Might be time to check the pressure in the system...

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