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2003 Chevy Silverado no power to trigger compressor on

Tiny
GHOFFPAUIR
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 195,000 MILES
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?
Wednesday, July 14th, 2010 AT 9:22 PM

3 Replies

Tiny
HMAC300
  • 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.
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Thursday, July 15th, 2010 AT 9:11 AM
Tiny
GHOFFPAUIR
  • MEMBER
  • 1 POST
Not getting any power to low pressure swich
What sends signal power to pressure switch?
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Thursday, July 15th, 2010 AT 9:45 AM
Tiny
HMAC300
  • 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


http://www.2carpros.com/forum/automotive_pictures/406719_image1_1.jpg

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Thursday, July 15th, 2010 AT 2:27 PM

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