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2005 GMC Sierra

Tiny
LESLIEBOSTOCK
  • MEMBER
  • 2005 GMC SIERRA
  • 6.6L
  • V8
  • TURBO
  • 4WD
  • 17 MILES
What does it mean if the heat comes out of vent but my defrost doesn't work
Thursday, September 11th, 2014 AT 6:38 AM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 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
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Thursday, September 11th, 2014 AT 7:04 AM
Tiny
LESLIEBOSTOCK
  • MEMBER
  • 3 POSTS
Do you know which side the actuator is on? Passenger or driver
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Thursday, September 11th, 2014 AT 7:38 AM
Tiny
HMAC300
  • MECHANIC
  • 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.
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Thursday, September 11th, 2014 AT 8:16 AM
Tiny
LESLIEBOSTOCK
  • MEMBER
  • 3 POSTS
Thanks it work when I pulled the fuse for 60 sec
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Thursday, September 11th, 2014 AT 10:11 AM

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