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- Sun Oct 07, 2018 5:08 am
- Forum: Automotive Air Conditioning Forum
- Topic: 2010 GMC Sierra cycling strange pressure readings
- Replies: 2
- Views: 7624
I thought I had a blend door issue and still might but my compressor is cycling. Pressure on low side will go to around 90 and compressor shuts off, high side will go to 250 and shut off and go back down to 125. I evacuated and pulled a vacuum overnight on my truck. It will take a little over a poun...