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:

HVAC Question

Thread Tools
 
Search this Thread
 
Old Jan 21, 2010 | 11:53 AM
  #1  
jcs44's Avatar
jcs44
Thread Starter
Instructor
15 Year Member
 
Joined: Jan 2003
Posts: 150
Likes: 0
From: harvest AL
Default HVAC Question

Hi,
I'm a C5 newbie with a 03 Z06. On the HVAC, when using the auto mode, can the AC be turned off, but still remain in auto mode? Seems kind of dumb to have the AC on when it's cool outside. My Silverado allows auto mode with AC off.
Thanks, jcs44
Reply
Old Mar 22, 2010 | 11:35 AM
  #2  
lespaulr0cker's Avatar
lespaulr0cker
Racer
15 Year Member
 
Joined: May 2009
Posts: 279
Likes: 4
From: Cincinnati OH
Default



I have wondered about this myself, thought that maybe my car may have had something wrong with the HVAC system because whenever I press auto, the A/C light comes on...even if it's 35deg!
Reply
Old Mar 22, 2010 | 05:18 PM
  #3  
byronhunter's Avatar
byronhunter
Melting Slicks
15 Year Member
All Eyes On Me
 
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
Default

When in AUTO mode, it's linked to the BRAIN of some STUPID engineer at GM.
Reply
Old Mar 22, 2010 | 06:20 PM
  #4  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,454
Likes: 1,163
From: Dyer, IN
Default

Originally Posted by byronhunter
When in AUTO mode, it's linked to the BRAIN of some STUPID engineer at GM.
.....wow.....
Reply
Old Mar 22, 2010 | 08:23 PM
  #5  
byronhunter's Avatar
byronhunter
Melting Slicks
15 Year Member
All Eyes On Me
 
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
Default

Originally Posted by lucky131969
.....wow.....
Lucky, that dosn't tell me whether you agree or disagree?
Reply
Old Mar 22, 2010 | 09:17 PM
  #6  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,454
Likes: 1,163
From: Dyer, IN
Default

Originally Posted by byronhunter
Lucky, that dosn't tell me whether you agree or disagree?
As a former automotive engineer.....I'll have to disagree.
Reply
Old Mar 22, 2010 | 09:23 PM
  #7  
Jewjenk's Avatar
Jewjenk
Pro
 
Joined: Dec 2009
Posts: 719
Likes: 2
From: Columbia South Carolina
Default

No it won't turn off, the car uses the AC to regulate the temp. to what ever you have set it for. Kind of dumb, but my Mercedes does the same thing, only the AC actually runs all the time no constant recycling. Not noticeable in the Mercedes due to the clutch less compressor. Our cars tend to be annoying when it's cold out, so I just set the heat temp manually. May ask if it can be set say to 74 manually then why can't auto do it with out the AC being on......

From what I can tell, it attempts to try and be kinda precise. Other words if the heat is set at 74 and it goes to 75, then instead of just shutting down the heat to cool down to 74, it actually turns on the AC to cool it down. I actually work in a building that in January it was 35 degrees outside, was nice and warm and toastee inside, then it felt like the AC was on, went to bldg maint. and the engineer confirmed that the ac was actually on. He did state when the heat rose above a preset temp. The AC would kick in to lower it to the preset. What a waste of energy. Could you imagine your house being set up like that, what a utility bill we would get........

Bottom line my auto is turned off, temp is set to 72, I'll turn back on the auto when it gets hot........
Reply
Old Mar 22, 2010 | 09:48 PM
  #8  
byronhunter's Avatar
byronhunter
Melting Slicks
15 Year Member
All Eyes On Me
 
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
Default

Originally Posted by lucky131969
As a former automotive engineer.....I'll have to disagree.
OK,, I didn't specify which one. I'm sure it's not You!
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Mar 23, 2010 | 09:36 AM
  #9  
dougbfresh's Avatar
dougbfresh
Le Mans Master
 
Joined: Nov 2005
Posts: 6,993
Likes: 25
Default

AC is used to get the moisture out of the air in the winter-NORMAL IN MANY CARS-My Ford truck does this too w/ the Defogger on.
Reply
Old Mar 23, 2010 | 05:41 PM
  #10  
lespaulr0cker's Avatar
lespaulr0cker
Racer
15 Year Member
 
Joined: May 2009
Posts: 279
Likes: 4
From: Cincinnati OH
Default

Originally Posted by lucky131969
As a former automotive engineer.....I'll have to disagree.
It's not everyday you run into a person who has the qualifications to put the words stupid and engineer together.

Last edited by lespaulr0cker; Mar 23, 2010 at 05:43 PM. Reason: stupid engineer can't spell correctly
Reply

Get notified of new replies

To HVAC Question





All times are GMT -4. The time now is 12:27 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE