problems with my air conditioning

2003 BUICK RENDEZVOUS
154,000 MILES
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CHARLESBERENG
  • MEMBER
  • 2 POSTS
My air conditioning in Levels 1, 2 and 3 does not work and when I go to level 4 and 5, it works correctly.
Sorry my English Im Chilean. Thanks
Apr 24, 2013 at 3:48 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check the resistor to see if it is getting power on those speeds then check to see if blower is getting the power if going to one then not the other the resistor is bad if not going to the resistor then the control switch is bad.
Apr 24, 2013 at 5:29 AM
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CHARLESBERENG
  • MEMBER
  • 2 POSTS
excuse me where is the resistance?
Apr 24, 2013 at 6:58 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
by the blower motor it will have about 4-5 wires going to it.
Apr 24, 2013 at 8:31 AM
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