A/C blowing hot air

Tiny
KBROCKSIECK
  • MEMBER
  • 2004 GMC SIERRA
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 143,000 MILES
My truck will blow heat out of the driver side and A/C out of passenger. I have the dash torn apart and have the one above heater box out and unplugged the one to the left of the air bag and nothing changes. I am planning on replacing them all to make sure I get the problem but cannot find a good picture of where all the actuators are at. Is there some place to find them or anyone know exactly where they are?
Saturday, July 8th, 2017 AT 7:12 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You should have tried pulling HVAC fuse inside truck first to reset actuators this must be done when any are replaced otherwise they do not work correctly. Picture shows left side actuator.
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Sunday, July 9th, 2017 AT 10:12 AM

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