2005 GMC Sierra Hi

2005 GMC SIERRA
17 MILES • 6.6L • V8 • TURBO • 4WD
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LESLIEBOSTOCK
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  • 3 POSTS
what does it mean if the heat comes out of vent but my defrost doesn't work
Sep 11, 2014 at 6:38 AM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
an actuator isn't working for modes meaning like floor deforst etc. try pulling fuse for 60 seconds with key on then reinstall it may reset the actuator to work if not you will need the actuator
Sep 11, 2014 at 7:04 AM
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LESLIEBOSTOCK
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  • 3 POSTS
Do you know which side the actuator is on ?? passenger or driver
Sep 11, 2014 at 7:38 AM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
I fgt in first reply you pull the hvac fuse inside truck try that first. see pic for actuator although there are tw different types you need to know if you have d07 or not that should be on glove box sticker.
Sep 11, 2014 at 8:16 AM
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LESLIEBOSTOCK
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  • 3 POSTS
Thanks it work when i pulled the fuse for 60 sec
Sep 11, 2014 at 10:11 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.