2004 Chevrolet sliverado air conditioning blowing hot air on front passenger side

Asked by dwfehlhaber Sep 05, 2015 at 11:36 AM about the 2004 Chevrolet Silverado 1500 Extended Cab RWD

Question type: Maintenance & Repair

2 Answers
30,485

Tom answered 8 years ago

It sounds like the directional sw (upper,lower,defrost etc) is leaking vacuum .... before you tear into the mixer door and vacuum actuator under the dash ... check that rotary switch. It's a combo electro-vacuum switch and the "O" rings fail ... the switch won't go the the correct position.

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brianp77 answered 8 years ago

It's probably the blend valve actuator below the dash. I just had the same problem with my 2011 Silverado on the driver side. I bought a new one off Amazon for $65.

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