A/C Cycle Switch

1997 CHEVROLET TRUCK
131,000 MILES
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My truck keeps blowing the A/C cycle switch, the A/C freezes up and stops blowing after I have had it running about 45 minutes. I have had the switch replaced twice. I have also replaced the heater control assembly with one that I bought online from LMC Truck.
May 19, 2013 at 2:24 PM
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ASEMASTER6371
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There may be an issue with the port not giving the correct reading to the hvac unit.

what are the pressures???

roy
May 19, 2013 at 3:12 PM
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I don't know what the pressures are, I will have to take the truck to a repair shop. I will let them know what your question is and maybe that will help them sort it out. I will reply to you to let you know what they say.

Thanks for your help and quick response.
May 20, 2013 at 5:09 PM
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