KentCNC

I have a 2023 3LT. The dash over the instrument cluster is starting to bubble. I had the car in the sun with a windshield shade. It was not too terribly hot in the car but I noticed the dash over the cluster is very hot even when the inside of the car is cool. The rest of the dash is only warm. I had the stereo about 1/2 volume which is fairly loud. I don't know if there is an amplifier under the dash in that area or something else generating so much heat. Do others have that area of the dash getting so hot compared to the rest?

tadda

Common 3LT problem...Heat is not the problem it's poor adhesion...I've seen a 3LT on the showroom floor with only 3 miles showing the same problem...

Avanti

Sorry of course; but, GM just seems incapable of learning from past mistakes. Do an advanced search for this issue across the C7 Forums, for example.

David.L

It is a known issue with the 3LT

Kevin A Jones

tadda is correct, happens to 3LTs that have little or no exposure to sun/heat. Personally, I wouldn't take a 3LT if it were offered at no extra charge.

BearZ06

Take it to a dealer, they'll order replacement parts and change it out. Nothing you did caused this.

Kevin A Jones

At least the C8 dash is easier to replace then the C7 where half the interior has to come out to replace the dash.

Vetteman Jack

Sad, but true.

MarkMeHopeful

I wouldn't trade my tension blue/twilight blue interior and that required the 3LT trim level. I like the look of the leather and if it delaminates I'll just suffer the time/trouble it takes for the dealer to fix it.

SteveL2

Maybe this was GM’s “fix?!”

KentCNC

I knew about the 3LT dash delaminating issue prior to ordering and hoped I would be one of the lucky ones not to have the issue. I had the same hope for the transmission and managed to get unlucky on both counts. At least the dash problem is a minor issue. I would still like to hear form others if the dash over the instrument cluster gets much warmer than the rest of the dash. Just touch it and then touch the glove box area and let me know if you feel a very significant temperature difference. Thanks in advance!

dohabandit

I wonder if Faurecia is still manufacturing these parts? Most of these interior parts are simple plastic panels with coverings and they snap/bolt in place.
Shouldn't even attempt to repair them, should just swap them out.

68/70Vette

The C8 LT3 interiors are made by Faurecia, a French company that specializes in leather interiors for high end automobiles. Here's a reference with a video,https://www.corvetteblogger.com/2019...e-c8-corvette/. There's two videos in the reference, one still works. Maybe a clue to the problem is the statement that they use a water based adhesive. Arghhh! That's a likely cause in my mind. If they have to use a water based adhesive that means they've come under draconian EPA interference with their manufacturing processes. I'm certainly not an expert when it comes to water based adhesives and paints, but my limited experience with them tells me they are nothing but trouble.

RKCRLR

There isn't anything inherently bad about water based adhesives as long as they are used for the correct application, and properly applied and cured. A latex adhesive is an example of a water based adhesive that can make a strong but flexible bond.
The debonding is likely a process control problem since most dashes don't have a debonding problem. Perhaps the 3LT bonded leather dashes require a different application/curing process (or different adhesive) than 1LT/2LT TPU materials but the operator gets mixed up. I don't think I've seen a post about a 1LT/2LT dash debonding.

Foosh

You don't see reports about 1LT/2LT debonding because they aren't leather. We only ordered 3LT because that's the only way my wife could have her "Natural Dipped" interior. So far, so good.

dohabandit

They pulled the C8 video for some reason. Really kicking myself for not grabbing/downloading the vimeo link when I could have!

dohabandit

I would be willing to bet if you pulled the covering fully off a failed part, you would see leather "fuzz" stuck to the plastic panel. It might be an issue with the leather itself coming apart due to larger differentials in surface tension due to heating/cooling cycles and the expansive nature of the materials.
Essentially, the leather is pulling away from the adhesive and the grains of leather are tearing off. It may be more of an effect of how the car is being exposed to environmental factors.

Maybe the adhesive didn't fully penetrate the leather surface and left some areas unattached which would increase the stress on the areas that were attached? All guesses....

BearZ06

A couple of people reported a 1LT or 2LT getting loose but near the number of 3LT's, not even close. The mystery is why GM hasn't taken care of this, C6, C7 and now C8 generations have the problem.
Also it's been reported that other brands have same problem, fine. Why hasn't GM taken care of this? I have purposely not bought a 3LT on my last 2 Corvettes because of this issue, I had it on a C6. Some say no problem just have it replaced under warranty; what about when there is no warranty?
It's been reported on Corvettes still in the showroom, my new C6 was that way when I bought it (ZR1), so I don't believe the cause is related to anything the dealer or owner does or does not do.

Chemdawg99

I have a 3LT and over a year into ownership, have not had the problem. Temperature doesn’t cause leather dashboards to delaminate. I might add that this problem is not limited to Corvettes or GM vehicles. It’s not something that happens often enough to enough vehicles so equipped to warrant anything being done besides repairing it if it happens to an owner’s vehicle.

Leather dashboards delaminate due to the adhesive failing and if you Google the term you will find numerous other car marques with leather dashboards experiencing the same issue.

Leather dashboard delamination tends to happen very early on if it is going to happen at all. It sucks when it does because we spend a pretty penny for these cars and for this option. We often expect perfection from a mass produced vehicle and that is never realistic.

RKCRLR

The "leather" used in the 3LT dash isn't a continuous piece of animal hide, it is a bonded leather - likely Kollamat made by Bader. Bonded leather usually has a fabric backing for strength but I don't know it it has a fabric backing in places where an adhesive is used to hold it in place. If it does have a fabric backing it could be a case where the backing is delaminating from the "leather". It would be useful if we had pictures of the back side of a debonded dash pad.