ac

2002 CHEVROLET TAHOE
150,000 MILES • V8 • 4WD • AUTOMATIC
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DONANNB
  • MEMBER
  • 2 POSTS
the ac wasn't working. i have replaced the compressor and the orifice tube and recharged it and it is still blowing cold air.
Jun 23, 2011 at 1:28 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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DONANNB
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  • 2 POSTS
i ment it is still blowing hot air.
Jun 23, 2011 at 1:31 AM
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Does the compressor run? Any applicable trouble codes? In the diagram, you can see the fuses for the compressor clutch relay. Not only check the fuses, use a voltage tester, see if fuse circuit has voltage when it should. One is hot all the time, the other goes hot when you turn on the key. When the relay is energized, that arm with the arrowhead moves to the green wire. The green wire is voltage to the compressor, black wire is ground. The compressor won't run without voltage and ground.
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Jun 23, 2011 at 3:01 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
If you can hear the clutch engaging the compressor and it has the amount of freon and no cool air-check the air blend door could be stuck in the heat position.
Jun 23, 2011 at 4:14 AM