CorvetteForum - Chevrolet Corvette Forum Discussion

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:

Heat/climate control not working

Thread Tools
 
Search this Thread
 
Old Dec 9, 2025 | 06:46 PM
Share
  #1  
winter924's Avatar
winter924
Thread Starter
2nd Gear
 
Joined: Dec 2025
Posts: 2
Likes: 0
Default Heat/climate control not working
I have a 2001 corvette that still has abs and traction light, when these are on I can’t use my climate control. I just replaced ecbm at abs fixer and these are the codes p1571, p1689, and p1630. If you all have any info that could help it would be greatly appreciated!
Reply
0
Old Dec 9, 2025 | 07:18 PM
Share
  #2  
mmartinez's Avatar
mmartinez
Melting Slicks
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Sep 2008
Posts: 3,138
Likes: 802
From: Espanola New Mexico
Default
The abs and traction control lights have no interaction with the climate control, the climate control issue is a separate issue.
Reply
0
Old Dec 9, 2025 | 07:54 PM
Share
  #3  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,470
Likes: 1,171
From: Dyer, IN
Default
Originally Posted by winter924
I have a 2001 corvette that still has abs and traction light, when these are on I can’t use my climate control. I just replaced ecbm at abs fixer and these are the codes p1571, p1689, and p1630. If you all have any info that could help it would be greatly appreciated!
The P1571 and P1689 are related, but you should not have a P1630 unless you have just replaced the PCM. "can't use my climate control" does not tell us anything specific.

...and you do not have any more codes H or C?
Reply
0
Old Dec 10, 2025 | 06:55 PM
Share
  #4  
winter924's Avatar
winter924
Thread Starter
2nd Gear
 
Joined: Dec 2025
Posts: 2
Likes: 0
Default
Originally Posted by lucky131969
The P1571 and P1689 are related, but you should not have a P1630 unless you have just replaced the PCM. "can't use my climate control" does not tell us anything specific.

...and you do not have any more codes H or C?
I just went in found many other codes the H I have b0502, B0503, B0507, B0508, B2578, B2597, B2282, B2384, B2262, B2264, U1064, B2283, B2285, U1064, C2100, C2105, C2110, C2215, U1064, now for the C I only have P1571, P1689, B0432, U1040, and P1630 from recently changing my pcm. I also noticed whenever my abs light randomly would turn off it would allow me to use my climate control (like heat, defrost, ac, anything), not sure if that’s related in any way.
Reply
0
Old Dec 11, 2025 | 07:36 AM
Share
  #5  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,470
Likes: 1,171
From: Dyer, IN
Default
Originally Posted by winter924
I just went in found many other codes the H I have b0502, B0503, B0507, B0508, B2578, B2597, B2282, B2384, B2262, B2264, U1064, B2283, B2285, U1064, C2100, C2105, C2110, C2215, U1064, now for the C I only have P1571, P1689, B0432, U1040, and P1630 from recently changing my pcm. I also noticed whenever my abs light randomly would turn off it would allow me to use my climate control (like heat, defrost, ac, anything), not sure if that’s related in any way.
Ok. Good luck.
Reply
0
Old Dec 11, 2025 | 11:29 AM
Share
  #6  
helga203's Avatar
helga203
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 6,013
Likes: 726
Default
Originally Posted by winter924
I just went in found many other codes the H I have b0502, B0503, B0507, B0508, B2578, B2597, B2282, B2384, B2262, B2264, U1064, B2283, B2285, U1064, C2100, C2105, C2110, C2215, U1064, now for the C I only have P1571, P1689, B0432, U1040, and P1630 from recently changing my pcm. I also noticed whenever my abs light randomly would turn off it would allow me to use my climate control (like heat, defrost, ac, anything), not sure if that’s related in any way.
So your still having issues with ABS???
Reply
0
Old Dec 11, 2025 | 10:01 PM
Share
  #7  
SilverC54me's Avatar
SilverC54me
Melting Slicks
20 Year Member
Active Streak: 60 Days
Liked
Loved
 
Joined: Jul 2004
Posts: 3,294
Likes: 482
From: Brea CA
Default
The issue is your ignition switch. Bothe the EBCM and HVAC controller are on the sameswitched power of the ignition switch. Your best way to fix this is to remove the switch and clean the contacts in the back of it. Clean the contacts don't replace it. The original switch has a white and black body with a green cap over the contacts. New ones are a completely black body made in China with sketchy functionality.

Have done this on several cars with the same symptoms. If you are in the Disneyland area and want some one to do this for you PM me.

Gary
Reply
2
Old Dec 12, 2025 | 04:18 PM
Share
  #8  
redzg's Avatar
redzg
Safety Car
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 3,771
Likes: 940
From: Orlando Florida
Default
Originally Posted by SilverC54me
New ones are a completely black body made in China with sketchy functionality.

Gary
He is absolutely right on this. The chinesium units have contacts that are misaligned in all three axes. Much better off cleaning the original.
Reply
1
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 Dec 13, 2025 | 01:22 PM
Share
  #9  
grinder11's Avatar
grinder11
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2004
Posts: 12,864
Likes: 4,668
Default
I cant help but think the EBTCM should have no bearing on the HVAC unit. Do you mean that the HVAC unit is totally dark/dead with no function when the ABS light is on?
Reply
0
Old Dec 13, 2025 | 01:26 PM
Share
  #10  
SilverC54me's Avatar
SilverC54me
Melting Slicks
20 Year Member
Active Streak: 60 Days
Liked
Loved
 
Joined: Jul 2004
Posts: 3,294
Likes: 482
From: Brea CA
Default
Originally Posted by grinder11
I cant help but think the EBTCM should have no bearing on the HVAC unit. Do you mean that the HVAC unit is totally dark/dead with no function when the ABS light is on?
They both are on the same switched circuit at the ignition switch. So when the contacts are sufficiently dirty from arcing it can cause slow power on to those and other modules. Cleaning the ignition switch contacts will correct the issue.

Gary
Reply
0
Old Dec 13, 2025 | 01:38 PM
Share
  #11  
grinder11's Avatar
grinder11
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2004
Posts: 12,864
Likes: 4,668
Default
Sounds absolutely logical. Thanks, Gary...
Reply
0

Get notified of new replies

To Heat/climate control not working

Back to Subforum
C5 Tech
View Next Unread
What are these connectors on the end of the driveline harness?




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 04:41 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