C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
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Old Nov 11, 2010 | 01:15 AM
  #1  
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phadley
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From: Sierra Vista AZ
Default heater

got a heater problem. It's a auto climate control type, everything seems to work except no heat blows out. Maybe a valve not working, where do I start to look. Also, doesn't seem like a lot of air in the fresh air mode either. Is there an outside filter?
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thanks phadley
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Old Nov 11, 2010 | 07:19 AM
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From: Van Buren Arkansas
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No cabin air filters that I'm aware of. Pull your codes and paying attention to the HVAC codes. My first thought is the plastic vacuum line that comes from the rear of the intake manifold, runs down by the back of the battery and into the firewall, which feeds the controller valves for the hvac. You might want to follow that as best as you can to insure its not cracked or broken.
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Old Nov 11, 2010 | 05:50 PM
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phadley
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thanks, I'll check the vacuum line
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Old Nov 11, 2010 | 06:04 PM
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I do have a vacuum gage and it is pulling very good vacuum.
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Old Nov 11, 2010 | 06:15 PM
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If you haven't done so you may also want to post in the Tech Forum. You may get additional input there. Sorry I can't be more helpful.
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