C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

climate control problem

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Old May 25, 2017 | 07:21 AM
  #1  
max76's Avatar
max76
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From: Arconate (MILANO) ITALY
Default climate control problem

Hi guys,

i recently change my blower control module.

Now the problem with the fan Always on is fixed.



I have a new little (i hope) problem with the climate control.

if i push on the botton for change air flow the light on the botton came on, but the flow don't change, it's seems that is block in defrost position.



Did anyone have the same problem?

What can i check?

Thanks in advance

Max
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Old May 25, 2017 | 03:54 PM
  #2  
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Space
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Default Climate control

Pull control unit out check all vac lines all the settings are vacuum controlled
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Old May 26, 2017 | 01:10 AM
  #3  
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Cliff Harris
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From: Anaheim CA
Default

What year is the car?

The vent doors and the air flow are controlled by the HVAC programmer. It's attached to the inner firewall above the accelerator pedal.
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