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5/18/18 3:17pm - Original Message: 'auto control on 96 c4'
paulaann
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Vette(s):
1996 CR convert

Joined: 5/18/2018
Posts: 2
I notice everytime I start the car the HVAC comes on . I have o push "OFF" to shut down. is there a computer code that will keep it off until asked to light off?
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5/30/18 12:21pm - Reply: 'Re: auto control on 96 c4'
Corveddie
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Beacon, NY - USA

Vette(s):
1994 convertible, arctic white, black top and interior. LT1 auto.

Joined: 11/29/2009
Posts: 30
The AC is on in all positions except "off," "vent (arrow to face)," and "heat (arrow to floor)."  The HVAC panel should remember your last setting when you start the car.  That said, the 1996 year HVAC has unique problems related to vacuum connections.

Corveddie
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6/8/18 10:08am - Reply: 'Re: auto control on 96 c4'
ratfink18
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powhatan, VA - USA

Vette(s):
89 white bik top blk int.auto.

Joined: 4/12/2015
Posts: 11
Try turning everything to the off position before shutting off the car,heat and a/c.If you still have the same problem,you have a bad hvac relay staying in the closed position.

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 Forums -> C4 Cooling and Heating Systems
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