2003 Chevy Silverado no power to trigger compressor on

2003 CHEVROLET SILVERADO
195,000 MILES • V8 • 4WD • AUTOMATIC
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GHOFFPAUIR
  • MEMBER
  • 1 POST
have changed control head, compressor,
will come on after driving and coming to a stop
relay and fuse are both good
dont no what powers compressor on?
Jul 14, 2010 at 2:22 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
thee is a pressure switch on the accumalator that powers the compressor. it could be bad or your system is low on freon.
Jul 15, 2010 at 2:11 AM
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GHOFFPAUIR
  • MEMBER
  • 1 POST
not getting any power to low pressure swich
What sends signal power to pressure switch?
Jul 15, 2010 at 2:45 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
sorry i thought that you may have checked your fuse and relay first. YOu may have a bd relay. here is a diagram for you


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Jul 15, 2010 at 7:27 AM
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