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2003 Yukon XL AC compressor question

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by Pikey, Jan 3, 2012.

  1. Pikey

    Pikey Moderator Staff Member 2 Years ROTM Winner 1000 Posts

    I have noticed that my AC compressor seems to cycle off and on a lot. I understand why it would do it if I had the auto climate control on. But, it does it when I have all the climate controls in the off position or when I have it on full heat. Does anyone else notice this with theirs? Any ideas why this does it? How to fix it? Seems like I could be losing MPG and wearing the compressor. Thanks
    Last edited: Jan 4, 2012
  2. Pikey

    Pikey Moderator Staff Member 2 Years ROTM Winner 1000 Posts

    I pulled the relay today and put a known good relay in. The compressor turns on almost immediately when I turn on the heater control. It has been nice so I have been driving with the windows open and the unit off. My MPG has increased by more than 1 mile per gallon. any ideas?

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