defroster vent... what is this called
Thread Starter
Instructor
Joined: Feb 2008
Posts: 128
Likes: 0
I am interested, the vent I have is cracked. Is there a reason it isn't available in stores? Is it not a stock option in the car? Thanks
Melting Slicks
Joined: Aug 2005
Posts: 2,359
Likes: 15
From: Confusion
Seriously, it was an option on the Vettes in certain years, and replacement parts generally are produced and available for 10 yrs after production year, SO-----------that bezel has not been available for a while. They all crack at the corners where the trim screw is. No longer available from GM and no one repros it, it is a very hard to find bezel. Like I said, I have 2 cars with the defrost option, so I needed to find bezels, and I have 3 NOS bezels and 1 complete NOS rear defroster setup for a coupe. 150$ for the bezel or 2500$ for the complete setup, switch to bezel.
Melting Slicks
Joined: Aug 2005
Posts: 2,359
Likes: 15
From: Confusion
Dude, you are talking about something completely different from the rear window defogger...................
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Le Mans Master
Joined: Aug 2006
Posts: 7,431
Likes: 1,561
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Vents that do nothing!
On my 74 t Top w/A/c I have the same non functional vents, I think they were for non A/C cars with Astro ventalation, maybe someone else can say for sure. PG.
Melting Slicks
Joined: Aug 2005
Posts: 2,359
Likes: 15
From: Confusion
Melting Slicks
Joined: Aug 2005
Posts: 2,359
Likes: 15
From: Confusion
Actually NO!!!! If you look in the owners manual, there should be a drawing of how the "Astro-Ventilation" system works, air enters the cab through the ball vents and flows through and out the rear deck vents. So, to answer an earlier question, my 69 has functional rear vents and my 75 coupe doesn't, they are solid under the grilles.
Intermediate
Joined: Feb 2009
Posts: 48
Likes: 0
Hey Bruce,
Thank you. Does your '75 have a blower motor on the
rear defrost ? The switch is missing from lower left
console (have the cutout) but my blower does work ,just
need to find the correct wires to plug it in.
jsholm2 I don't know how original your car is. If it were me I would re-fiberglass the original plastic one and with some work it would look stock.
Thank you. Does your '75 have a blower motor on the
rear defrost ? The switch is missing from lower left
console (have the cutout) but my blower does work ,just
need to find the correct wires to plug it in.
jsholm2 I don't know how original your car is. If it were me I would re-fiberglass the original plastic one and with some work it would look stock.
Racer
Joined: May 2011
Posts: 297
Likes: 3
From: Indianapolis
Astro ventilation was not needed on A/C cars, so the rear vents were blocked off. My '75 A/C car was this way it was a real pain to wash the exterior and try to get all the water out of the "vents" (grills).
Bruce - I am guessing your '69 in non-A/C, and your '75 is A/C.
Last edited by indydoug; Apr 9, 2012 at 03:13 PM.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Melting Slicks
Joined: Aug 2005
Posts: 2,359
Likes: 15
From: Confusion
Astro ventilation was not needed on A/C cars, so the rear vents were blocked off. My '75 A/C car was this way it was a real pain to wash the exterior and try to get all the water out of the "vents" (grills).
Bruce - I am guessing your '69 in non-A/C, and your '75 is A/C.
http://www.docrebuild.com/dr-r-web/HEAT68-79.PDF
4th Gear
Joined: Sep 2023
Posts: 4
Likes: 1
Melting Slicks
Joined: Apr 2021
Posts: 2,729
Likes: 2,174
From: Minnesota
