schpenxel

Well, as stated in the topic. Cold air blows from the two passenger vents and passenger foot vents fine. All air coming out the center vent and all driver side vents is pretty warm...not hot, but definetly not cool. I can switch through all of the settings (defrost, dash, floor, ect.) and they all work fine on both sides.

Any ideas what's wrong before I start taking stuff apart?

Johnny_B_Good

Dumb question…..but do you have Dual Zone AC? Did you check the temp setting on the drivers side….maybe it’s set warmer than the pass.side?

Doughan

Here's a recent post about this problem that has some good suggestions. Unless you have a good Corvette specialist, I wouldn't take it to a stealership unless you want to waste your money.


http://forums.corvetteforum.com/show...post1552001125

0EG@EnglandGreen

Are you married?

DRIVER456

That happened to me,I had to pull 2 fuses under passenger side floor board while car was running and put them back in.Forgot which ones though.Works fine now.Its posted somewhere,keep looking.

edensknight

Hi Carson,

As Doughan so kindly recommended: Please do access the link posted above for a little helpful insight regarding this specific HVAC issue. And, do let us know how it turns out for you.

Best Wishes,
Eden

Zoso1951

seller put in a new battery, and all the way home the a/c blew hot
on me, cold on passanger. Took to CHP ( Corvette & High Performance on the west side (Oly WA), and Al just cleared some old
codes on the DIC, and that resolved the whole problem.
I thought it would be something major, but just clearing the DIC resolved.

schpenxel

I first have to ask how you knew my name...

Secondly, I reset all the codes last night before I went out (and before I had read the replies here) and things are working fine now. Now if I can get the valve that lets freon in but not out on the low pressure side to quit leaking when it's cold I'd be in good shape...

WWK888

Uhhhh...maybe he looked at your profile?

JR_VETTE

I have posted this on several occasions in other threads and it fixed the problem. Sometimes (not always) when I disconnect my battery, my doors get all out of wack. Codes popup on the computer, etc. For me, a simple disconnect/reconnect of the battery cures the problem. The code reset doesn't help, neither does pulling the fuses.

JR_VETTE

Additional information :

http://forums.corvetteforum.com/show....php?t=1182972

edensknight

Hi Carson,

Hello, again. Frankly, being that you are a CF member, I merely "clicked" onto your profile in order to perhaps see your name, and, therefore, kindly address you very politely and respectfully.

Nevertheless, please notice that "JR Vette" has also thoughtfully responded by listing a link that specifically addresses this common C5 HVAC problem. This new post will then direct you to a more in depth explanation of the faulty Left Air Temperature Actuators that I posted on 7/12/05. Hope that the info is helpful to you.

Cheers,
Eden

YO-EL

When you guys are all done changing out head units, actuators, & clearing codes via Tech II, only for the issue to come back, let me know & I'll post the REAL fix.... (like I've done about 1000 times before)

Gee, maybe, Troy should make my post a sticky...

005

JR_VETTE

Ok, why the secrecy?

YO-EL

Ok.. but this is like the 1000th time I've done this..

IF you continue to get the codes B0361 & B0441, even after you clear them, or after your tech clears them with a TECH II, do not change the actuator (motor), wiring, or the control unit..

The codes are falsies, and are NOT a true indicator of the PROBLEM, even though the TECH II may point to something else based on the values the readout displays..

The problem causing these codes is the left temperature door ITSELF!
It is not closing fully...

The FIX is to have the tech open up the actuator & inside there will be a set of gear teeth, like in a watch..

The teeth have to be indexed over by 2 teeth!
There is an INTERNAL GM TSB on this which will direct the tech WHICH WAY to index the 2 teeth, clockwise or counter clockwise.

Once the teeth are indexed over, the left temperature door will close properly, and you will never get the codes again, and the drivers side A/C will be as cold as the middle and the passenger side..

OK..?

Ellis.. over & out!

Dr. Dan

Hey El,
Think that this would be a good for the 'C5 Tech tip' section? I hadn't seen the other 999 times.

Dan

YO-EL

Yea, well one of the guys can email it to Troy & see if he accepts it..
The problem here is that at the dealer, this is what they call an "INTERNAL" TSB.. And I think the tech has to directly ASK for it in order to get it from GM Tech Suport.. For some reason GM Tech Support will NOT volunteer this info to their techs...I was thru this about 6 different times until we FINALLY got it right a few yrs ago, and haven't had the problem or codes since!

edensknight

There are many ways to trouble shoot most HVAC issues, and, many inherent electrical problems. Certainly, disconnecting the battery as fellow member JRVette, mentioned above is a start. However, if a symptomology remains persistent (malfunctioning of a system or device), and, you continue to throw trouble codes: You may have a problem. Therefore, it would be most prudent to, first, research current literature for the existence of any TSB's posted by GM regarding your possible faulty device, or, the specific systems failure you are experiencing. And, indeed, there exists quite a list for the C5 that includes the faulty HVAC actuators.

In fact, GM finally discovered that the faulty actuators provided such a persistent failure rate (high consumer complaint response) that they had to finally relent and pinpoint what feature in the actuator/HVAC system actually causes such specific failure. Hence, the redesigning of the the HVAC actuator was set into motion by GM.

The old actuator (original GM part# 16163982) that had previously been designed with a small cast aluminum fine tooth gear ring, would easily wear and slip causing havoc with the temperature switch and actuator doors, and, have to be reset by a tech as indicated above. However, resetting the the teeth would not always resolve the problems for every customer, when what originally caused the failure was a design flaw in the actuator (gear teeth ring design) itself.

Hence, GM updated the actuator, not only once, but, twice, to the now new and improved design that totally and finally eliminates the fine tooth gear ring slipping and reset issue. The newly designed GM part #89018365 is redesigned without the easily stripped and misaligned cast gear tooth ring in the new upgraded actuator. Lastly, I offer these solutionary measures and information merely in an effort to help inform and assist those Corvette owners beset by this frustrating issue. Sharing experience and information helps us all to gain the very best, as well as, the most out of Corvette ownership.

As food for thought, here is another link that explains yet another important point to trouble shoot for regarding this issue:

http://forums.corvetteforum.com/show...502&forum_id=1

Best Wishes to You,
Eden

CUlookin