C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Heater question

Thread Tools
 
Search this Thread
 
Old 11-07-2018, 10:38 PM
  #1  
1978vett
Racer
Thread Starter
 
1978vett's Avatar
 
Member Since: Jul 2013
Posts: 423
Received 6 Likes on 5 Posts
Default Heater question

is the ac supposed to be on when trying to heat my car. 2004 Vette. The ac light is on. I must be doing something wrong when I turn it on.
Old 11-07-2018, 11:06 PM
  #2  
grantv
Le Mans Master
 
grantv's Avatar
 
Member Since: Sep 2014
Location: Kelowna BC
Posts: 5,280
Received 535 Likes on 491 Posts
Default

Is it on the windshield? If so, that's normal.
Old 11-07-2018, 11:08 PM
  #3  
Vetteman Jack
Administrator

Support Corvetteforum!
 
Vetteman Jack's Avatar
 
Member Since: Mar 2001
Location: In a parallel universe. Currently own 2014 Stingray Coupe.
Posts: 342,749
Received 19,238 Likes on 13,936 Posts
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19-
'20-'21-'22-'23-'24
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran


Default

Moved to C5 Tech.
Old 11-08-2018, 01:30 AM
  #4  
TastyBacon
Pro
 
TastyBacon's Avatar
 
Member Since: May 2013
Location: MN
Posts: 738
Received 80 Likes on 62 Posts

Default

If you have auto climate control, it will often start in defrost mode, or split between defrost and heat. It's normal, the system is just programmed to run the defrost to try to keep the windows from fogging up.
Old 11-08-2018, 06:52 AM
  #5  
1978vett
Racer
Thread Starter
 
1978vett's Avatar
 
Member Since: Jul 2013
Posts: 423
Received 6 Likes on 5 Posts
Default

Thanks for the replies.. sounds like it’s working as it should.
The following users liked this post:
Belba184 (11-08-2018)
Old 11-08-2018, 10:38 AM
  #6  
Belba184
Advanced
 
Belba184's Avatar
 
Member Since: Jul 2018
Location: Fairview Heights Il
Posts: 55
Received 6 Likes on 6 Posts
Default

i had the same question. Anytime I turn my defroster on the a/c light turns on and I couldn't get it to shut off. Thanks for asking
Old 11-08-2018, 11:12 AM
  #7  
1978vett
Racer
Thread Starter
 
1978vett's Avatar
 
Member Since: Jul 2013
Posts: 423
Received 6 Likes on 5 Posts
Default

I think the ac comes on anytime the defrost is used , I was curious because my ac comes on when I’m trying to use my heater , I couldn’t find much in the owners manual..
Old 11-15-2018, 02:40 AM
  #8  
ncali
Pro
 
ncali's Avatar
 
Member Since: Nov 2018
Posts: 625
Received 89 Likes on 79 Posts
Default

The ac acts as a dehumidifier. so when you have a cold morning with condensation on the glass the ac and the defroster together dry the air

Get notified of new replies

To Heater question




Quick Reply: Heater question



All times are GMT -4. The time now is 10:53 AM.