Defrost switch
Figured I'd hit it with some WD40 but don't know it it will get where it needs to go and seems like it could make a mess. Anyone else have this problem? Anyone got a picture of what's behind the panel?
NO WD40!!! IT IS NOT A LUBRICANT, IT IS A RUST PREVENTATIVE.
WD40 will, over a short time, leave a sticky residue, and will contribute to making parts more difficult to operate. Recommend "Rem-Oil", Pro-Shot Zero Friction, or similar light-machinery oil.
WD40 is a top-notch rust preventive, due precisely to it's conversion to a somewhat sticky residue. Do not use it for lubrication.
I use it on most metal finishes that I do not want to oxidize at all.
Last edited by buckmeister2; Feb 28, 2017 at 05:21 PM.
Take it all apart pull the switch out and clean it and put it back, a lot of work for such a ridiculous issue, but wd40 will only make it worse
Figured I'd hit it with some WD40 but don't know it it will get where it needs to go and seems like it could make a mess. Anyone else have this problem? Anyone got a picture of what's behind the panel?
Least used I didn even know it had that is it close to the eject buttons or what ever the ones are with the little pictures of the seats

Big box store's electrical departments sell cans of compressed electronic cleaner. Give switch a shot w/ that stuff and if it doesn't work, likely the switch itself.
The Best of Corvette for Corvette Enthusiasts
Figured I'd hit it with some WD40 but don't know it it will get where it needs to go and seems like it could make a mess. Anyone else have this problem? Anyone got a picture of what's behind the panel?
I have had this exact same issue of the windshield and rear defrost buttons sticking on my 08 and colder the season the stickier they get! They don't stick in the summer.
The issue seemed to get slightly worse over 4 or 5 years.
I bought the car with 20,000mi on it so i don't know if it ever had a drink spill from the previous owner or if this is a defect??
Can you confirm if in fact nothing has ever spilled on these buttons??
Has anyone else ever had this problem and never had a drink spilt on the buttons?
The issue seemed to get slightly worse over 4 or 5 years.
I bought the car with 20,000mi on it so i don't know if it ever had a drink spill from the previous owner or if this is a defect??
Can you confirm if in fact nothing has ever spilled on these buttons??
Has anyone else ever had this problem and never had a drink spilt on the buttons?
The reason im wondering if its a defect is because i bought a replacement unit out of a gently used c6 with low milege and it showed up with the same 2 sticky buttons! Therefore im not sure if they all get like this in the cold temps or if it was also spilt on at some point.
The reason im wondering if its a defect is because i bought a replacement unit out of a gently used c6 with low milege and it showed up with the same 2 sticky buttons! Therefore im not sure if they all get like this in the cold temps or if it was also spilt on at some point.
BE SURE TO READ THIS FIRST:
I've never used it (yet) on buttons, I'd test it somewhere to see if you can get the white out of the small crevices. It's sold for home plastic window runners and I've used there and on my car where I want smooth plastic operation. Awesome for plastic rivets remove and replace!!!!!
Try and test it some place and see if it that helps.
BE SURE TO READ THIS FIRST:
I've never used it (yet) on buttons, I'd test it somewhere to see if you can get the white out of the small crevices. It's sold for home plastic window runners and I've used there and on my car where I want smooth plastic operation. Awesome for plastic rivets remove and replace!!!!!
Try and test it some place and see if it that helps.
i might try to disassemble it as long as its not too complex!
i fixed my tv remote that was once spilt on and stopped working. I took it apart and cleaned with rubbing alcohol but it was pretty simple and straight forward. That worked perfectly.
i might try to disassemble it as long as its not too complex!
i fixed my tv remote that was once spilt on and stopped working. I took it apart and cleaned with rubbing alcohol but it was pretty simple and straight forward. That worked perfectly.
Anyway, your problem. If you disassemble the unit, you will have complete access to the buttons without any electronics attached. You can get them as clean as you like. Take a picture of the unit in the car as when you remove the cover I think I remember the buttons will fall out. The cover comes off easily.
To get the cover off you'll have to remove the center dash bezel, then remove the HVAC unit connections and the two screws that hold it in.
If you have problems, there are more than a few steps to do the above sentence, ask here on the forum someone will help you including me. There are also several writeups on removal already posted.
Anyway, your problem. If you disassemble the unit, you will have complete access to the buttons without any electronics attached. You can get them as clean as you like. Take a picture of the unit in the car as when you remove the cover I think I remember the buttons will fall out. The cover comes off easily.
To get the cover off you'll have to remove the center dash bezel, then remove the HVAC unit connections and the two screws that hold it in.
If you have problems, there are more than a few steps to do the above sentence, ask here on the forum someone will help you including me. There are also several writeups on removal already posted.
As mentioned I purchased a replacement unit which also has the issue (its not installed yet), and the seller has given me the option of returning the one i bought, but it's so brand new looking i think it is worth trying to disassemble first.
Ill attempt this today.
Upon disassembly you will find trace amounts of sticky (cola in this case) located on the shell of the button(s) itself which slide in and out of the housing. Also, I can now see why cleaning it from the outside was unsuccessful as the ledge behind the face that the buttons rest against was caked with residue too.
Overall an easy fix and pretty straight forward to take apart.
Some clarification;
To clean once taken apart, I used hot water, some generic cleaner and a damp paper towel.
The ***** do not need to be removed.
The buttons will not fall out.
Just remove the 4 screws on the back and the guts will separate from the face. The only things that will fall out are two white tabs that push the arrow rocker button up/down. Just set them back into the two slots on the back of the face when putting back together.
To remove each button just depress the little lock tab on the bottom of them from the back. You'll see it..
Thumbs up me if it helped!
Last edited by Z51LS3; Nov 19, 2017 at 06:34 PM.























