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2004 Chevrolet Silverado Heater Issue

Tiny
NICKUSARMY27
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 142,000 MILES
I was watching and reading some of the videos and comments on youtube. They are very helpful but before I start taking anything apart I would appreciate an opinion on my issue. The passenger side controls where air comes from and the driver side controls temperature but my issue is that it is blowing hot for about ten seconds then fades back to cold. The ac works fine, the heat is the issue. I put the thermostat to cold and back to hot and it goes hot again for a few seconds then fades away. I appreciate any help!
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Friday, November 14th, 2014 AT 7:52 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Suspect a bad blend air door actuator.
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Friday, November 14th, 2014 AT 8:15 AM
Tiny
NICKUSARMY27
  • MEMBER
  • 3 POSTS
Thank you, is that the driver or passenger side one?
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Friday, November 14th, 2014 AT 8:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Do you have a dual climate system? If so and only one side is affected, it will be the same side on the control panel. For example, the left control will be the left blend door.
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Friday, November 14th, 2014 AT 8:33 AM
Tiny
NICKUSARMY27
  • MEMBER
  • 3 POSTS
It is dual but it has been blowing cold both sides pretty much.
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Friday, November 14th, 2014 AT 8:37 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Then you need to check both.
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Friday, November 14th, 2014 AT 8:48 AM
Tiny
NICKUSARMY27
  • MEMBER
  • 3 POSTS
Thank you for your time and help!
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Friday, November 14th, 2014 AT 8:53 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Glad to help. Let me know if you run into trouble.

Joe
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Friday, November 14th, 2014 AT 9:21 AM

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