2003 with 30k miles and no matter the mode or temperature, there is no air coming through the vents. I went and checked for codes, but nothing under HVAC. I do hear the compressor click on, but that is about it. Any ideas?

 

Probably a vacuum line or vacuum source disconnected.

Check this thread:

https://www.corvetteforum.com/forums...with-pics.html

 

Thanks, that was my initial thought.

 

Another thought. I had a simiar issue. I used my shop vacuum with a DIY made small hose that I inserted between the vent blades. It cured my problem.

 

At the rear of the intake manifold is a very small very short black nylon vacuum line with a small rubber nipple that plug into a manifold nipple. That nylon vacuum line is very easily damaged and or can become disconnected from the manifold fitting. The nylon vacuum line runs inside the main wiring harness at the rear of the engine/fire wall.

NOTE! Your vent positions and levels all run off engine vacuum.

Bill

 

Yes, IIRC, Bill is right. Only the temp is electric actuators....

 

Thanks all, I am going to make an appointment at my local Chevy Dealer soon to have this fixed, along with new tires.

 

That my friend will be EXPENSIVE! You said it wrong,, Its pronounced STEALERSHIP. RECOMMENDATION... Find a local shop near you and use them to fix this simple issue. We can knowledge you up so you know what you are talking about and what to expect. Where do you live. Maybe someone can recommend a good reliable shop near you.

BC

 

Mr. Curlee REALLY knows this subject.

While a perfect restoration of the vacuum source can be complicated (vacuum reservoir in an alcove under and behind the battery) viable repair methods exist that can be done in a n hour or so in the driveway. You more than likely have someone near you that can help with the fix.

 

Its very difficult to determine a persona ability or desire to dig into an be confident at repairing a problem on their car. After 20+ years of prodding, poking and coaxing people to attempt to dig into the bows of their ride, I'm less likely to do that Especially if it involves using a multimeter. Holy hell,, That's like asking someone to touch radioactive waste! I usually default to helping them find people who can help. God don't get me wrong! I'm the first to rip a car apart and solve complex issues. People seem more comfortable at dropping their car off at a a local STEALERSHIP, allowing someone who has most likely never worked on a C5 (other than changing the oil or an air filter) and ripping Thousands of bucks out of the wallet! Hell, I very much dislike stealerships! If you cant do your own work, take your car to a recommended local specialty shops who knows C5/C6 Vettes. They are out there. You just have to do your home work and find them.

On the OTHER HAND, if your resourceful, you can find another C5 person in your area who will most likely be tickled pink to come over and help you sorting out the issue, build your confidence and teach you some skills! Ask for help. Look in your regional corvette section and post a HELP request! We use to call them Corvette repair parties. Invite the local Corvette enthusiast over for pizza, beer, friends, good time and to get sh$t fixed! I'm amazed at how people are petrified at removing the intake manifold! Hell, once you do it, you can do it in 1/3 of the time that you did it the first time. Its actually straight forward and easy!

Hey, I and many of the C5 Mainstay experts are here for you guys if you need help. All you need to do is ASK for help.

BC

 

Hi Bill. agree with your sentiment. I will say this, my local Chevy dealer has an excellent Corvette Specialist who has worked on my car previously, along with other Vettes in the area. I do appreciate your thoughts and insight.

 

That's very rare but good on you! Yes, there are excellent GM specialist (I think GM list them as world class specialist) but as the years go by, its more and more difficult to find them for the C4 & C5 cars. It would be to any owners advantage to inquire at the service writers desk as to if they have a certified specialist for your C5. Insist on that person servicing your car! Another fact! Go ARMED with knowledge! If you already know what is causing the issue, its less likely that you will be charged with something that is not the issue. Know how to read and understand your DTCs. If you have that knowledge its useful tools to getting the issue fixed correctly and efficiently.

BC

 

This is resolved. Dropped the bottom panel on the passenger side and tapped the blower motor with a hammer. Back in business!

 

Funny as I read down through this I saw no one asking if the fan even was running.

Just glad you found it and it is running again. At least it is an easy one to change if it continues.

 

HA,, I found out the the fan motor used bronze oillite bushings for motor bearings
After many years, they can become dry and can bind up the motor.
You can add oil to each bronze bearing and extend the life of the motor or improve its operation.
I remove mine and when you do you will see that there is a larger hole on the side of the motor for the little rubber fresh air vent hose. You can see and access the bushings through that hole and add a few drops of oil to each bushing.

BC

 

Some of the early C5 fan motor bearings/bushings are enclosed on the bottom inside the metal motor housing. Where the bearing/bushing livesm there is a small bump. I found out that you can carefully drill a very small hole in that housing protrusion (just big enough to get the red straw of an aresol can into and spray lubricant into at least the bottom bushing without removing the motor from the HVAC housing.

Some of the later C5 have exposed OPEN bearings and you can add oil directly to the lower bearing without any issues. Thts usually the one that has the most issues...

BC