It’s not cracked. It’s inside the glass.

Anyone have this issue under warranty?

No idea how it occurred. Small chance happened after I washed and blew dried the car.

Car was always at my home. So no tampering from outside

 

Looks like the auto-dim skin that's on the glass. Do you have a radar detector wired to your car?

 

I do and wired black to black, red to red.

Even if wired correctly that can occur?

No other issues.

 

Take it in and discuss with the service advisor about a warranty replacement.

 

Because I hardwired. When side mirror is replaced, is there still a chance, it will occur again to either mirror?

Or do you recommend just external wire from cigarette lighter.

I’m using the Blendmount wire and mount with a Uniden R8.

Many thanks!

 

Don't know but GM might think so. I'd remove the RD wiring before I brought it in.

 

This is a known issue previously disclosed and discussed on the forum. GM issued a bulletin about it. Not a warranty issue since this is self-inflicted, so the question is how much is your integrity worth? Do you pay to replace the damaged part or remove signs of having tapped into the wiring and do the old head-scratch while at the dealer? I had a Volvo where I totally messed up installing a new headlamp bulb. It caused about $900 in damage and I fessed up to the service writer when I brought in the car for service. He told me that I was the first person in his eleven years on the job to admit to causing damage. He ended up advocating on my behalf with the service manager and they cut the price by 50%. I left happy and it was a good object lesson for my kids. Stuff happens...

From the internet: "What’s more expensive – a speeding ticket or replacing the outside driver-side mirror on your Corvette C8? Some owners are about to find out after General Motors issued a technical bulletin detailing how hardwired radar detectors and the side-mirror glass aren’t cooperating. This could lead to degraded mirror glass that displays a spider’s web of lines that obscure the reflection on 2020-2022 models.
According to the bulletin, one cause might be an aftermarket radar detector hardwired into the inside rear-view mirror. The detector could cause a higher voltage to go to the side-view mirror, resulting in the unsightly damage. If there is damage, then the radar detector is likely tapped into the inside mirror’s X1 connector, located behind the mirror’s front cover. The fix requires disconnecting the jumper harness and replacing the damaged outside mirror. Sadly, the warranty doesn’t cover any damage caused by aftermarket devices, so owners will have to foot the bill."

 

OP, looks like GM is aware of it doing exactly this so you will likely be on the hook for the replacement. And so you should be...this is not a manufacturing defect on their part.

 

Before I'd drop $900 I'd look for a used mirror.... assuming theres one to salvage off of Coparts with all the flooded cars in Florida. Or perhaps those aftermarket mirrors that improve your rear angle that get posted on here?

 

Think should only be glass replacement? Not 900. repair?

Have call into dealer and will be upfront. Surely not a GM defect.

Thanks all for the quality feedback.

 

Yes from Paragon, I have them and they work great...also $179 for a pair which will probably be a bargain compared to the OEM mirror.
I also have a Uniden R7 with the blendmount wired the same way with no issues....so do many many other people.
For those of us that switched to the wide angle Paragon mirrors, we probably still have the OEM mirrors laying around, so there's that option as well