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Re: Climate Control Damper is stuck in defrost mode

Subject: Re: Climate Control Damper is stuck in defrost mode
by Fredbird on 2011/6/30 12:57:21

Quote:

bigmoe wrote:
Okay I want to know exactly what you did because I'm in the same boat with my 94. I replaced the check valve and it didn't work. Where is that hvac unit located? Is it a hard fix? I HATE working under dashes but I really need to get my a/c working correctly.


Sorry it took so long to post this... First the corvette-guru site was down, then my laptop went down. Computers... What a pain. (And that's what I do for a living. LOL!)

Basically I just removed the programmer, clipped the tip of each nipple reamed out the center with a very small drill-bit and then put everything back together. I'm attaching a picture of the final product.

As to the location and removal of the processor

(This is for informational purposes only. I can not be held liable for incorrect information, breakage or injury by anyone following these instructions. Do so at your own risk.)

Now that the legal stuff is out of the way

1. Disconnect the negative battery cable
2.remove the hush panel from the driver's side
3. While sitting up-side down in the drivers seat, throw your feet up out out of the open top of the Car while putting your head all the way down at the brake pedal looking up. (This is the fun part... and believe me I felt my age the other day doing this)
4. look up. Just above the gas pedal is a black box. with one bolt on a tab toward the bottom.
5. Up toward the top of the box should be a manifold of colorful vac. hoses.
6. Pull the whole manifold out. away from the box. (there should be a slip nut on the center bolt that should come off with the manifold.
6. If you were getting good suction here, you will hear the whoosh of air from the vac. as you pull the manifold off.
7. Once the manifold is off you can unbolt the processor from the firewall. (the previously mentioned bolt at the bottom of the box.)
8. Remove the processor buy pushing up on the box until it clears the bottom bracket, then tilt the box slightly out so it once again can clear the bracket as you pull down. (There are two tabs on top that go into slots holding it in place. Be careful not to tilt or twist while they are in the slots because they will break off)
9. wiggle and turn the processor box until it's free from under the dash.
10. Disconnect the wire harness.
11. Inspect the nipples. (No giggles please)
12. Do your repair
13. Use electronic cleaner to clean the pins on the connector and the female connector (Since you're already here)
14. Replace the processor in reverse order.
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