GM Issues Service Update For C8 Corvette Due To Porous Wheels
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General Motors has issued a service update to address an issue related to the construction of the alloy wheels on certain examples of the 2020 and 2021 model-year C8 Corvette Stingray.
The problem: certain C8 Chevrolet Corvette vehicles may have a condition where exposed porosity in wheel castings are larger than allowed and do not meet internal GM requirements. In simpler terms, some Corvette wheels may have visible holes in the surface due to a fault in the casting process. Only around 10 percent of the wheels on affected vehicles are believed to have this problem.
The hazards: while this issue does not pose an immediate safety risk to vehicle occupants, owners may not appreciate the way the large pores on the surface of the wheel look. The service bulletin did not indicate if this issue affects the structural rigidity of the wheels.
The fix: dealers are instructed to inspect and replace wheels that do not meet internal GM requirements.
Affected components: alloy wheels.
Affected vehicles:
- 2020 Corvette Stingray
- 2021 Corvette Stingray
Owners should: GM will notify owners of affected vehicles and instruct them to make an appointment with their dealer. Owners with questions or concerns regarding this service bulletin can also reach out to GM using the contact information provided below.
Contacts:
- General Motors Recall Numbers: N202315731, N202315730
- Chevrolet Customer Service: 1-800-630-2438
- NHTSA Toll Free: 1-888-327-4236
- NHTSA (TTY): 1-800-424-9153
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So not only are the stock wheel selections hideous, they’re also defective. C’mon Man!?!
The wheel in the picture above with the painted/machine face looks nice. The all black ones don’t. Black wheels need to go out of style they just make a car look cheap and boring.
Whoever is making these wheels needs to get quality under control.
China is making these wheels
China makes too much crap for GM and then GM screws the customer when something isn’t right. Barra better get her org together or they will be bleeding customers. I don’t think the Chinese government would allow poor customer service in China.
Nope. The TSB shows they are made in Mexico.
Sounds like there’s a lot of bugs with these new vettes…
Mine has been flawless, love this car. First GM, really impressed.
Oh come on. It is a completely new vehicle. Everything has changed. Expect some problems. Wheels however should not be one of them. With the strike, virus and supply problems there are not many out yet in the field.
Everyone is entitled to their opinion. You don’t like black? Then don’t get them. Some people like myself like them. The black rims are overwhelmingly the favorite among the 20-21 Vette buyers by the way. See you on the road in your new Stingray hopefully.
How are they able to get by factory QC is my question. Sure makes you wonder about QC on the rest of the car!!
want a mid engine car, buy one that has been in production for years not a first try want to be.
Good idea!
What other mid-engine car sells for the price of a C8?
Just took home my 21 LT2 convertible after 16 months of waiting. I have the black flash painted wheels. My question is, how will one be able to see the defects if they are painted over and filled in with paint? To me, porous means weakened structure especially on a part of the car where all the weight rests.
First priority before I pull this out in the road is fixing the gaping leaf sucker vents on the sides and protecting the front radiators (ordered the grill covers)…..old but not dumb
I agree with the carbon flash wheels looking good I have them on my Torch Red Vette. I also have a 2021 LT2 Z51 convertible. I live in Indiana and could not stand to have my car sit in the garage with the summer only tires. I ordered all season tires and new rims that are standard on the Vette! I will change back to summer tires in June! Where did you order grille covers? I have been looking. Enjoy the ride!! Thanks
i got the side covers from radiatorgrillstore.com, and the front covers from c8vetepartsonline.com. I chose to have the front ones go over the grill instead of behind it – it will block the frunk release, but i liked the better framing on them, and the ease of front installation. They were a little pricey but its a new start up place, so expected it. the side ones I am starting to see people make their own templates and cut out the plastic grills themselves – lots of stuff on youtube for the install
How about the issue of defective wheels for C-7 Vettes? Are these “new” wheels from the same supplier? Very stiff sidewalls on your typical high performance tire can easily transmit more energy from ground “issues” from the tire to the wheel. Also, just look at vehicles, such as the Tahoe, Suburban, GMC and Escalade, etc. with 22 inch rims (which look stupid anyway (IMHO!). With the possibility of casting issues and coupled with stiff (performance) suspension, the possibility of wheel failure increases.
Robert
How can a company like Gm put alloy wheels on there cars
with such big defects you can see with your naked eye
Me as a retired wheel manufacturer in our days we sold such wheels as Scrap
Do they have any serious quality control ?
I agree…is this just a continuation of the C7 Vette Alloy Wheel debacle? How can GM install defective Alloy Wheels on any high performance vehicle? And at the MSRP they bear?
Ah that Government Motors quality.
It’s so nice seeing Scotty Kilmer just absolutely rip into GM. They deserve every ounce of hate thrown at them.
Getting rid of my Grand Sport for several issues including cracked rear wheels. Dont tell me I’m jumping into the same s&#t with the C8.
Porous wheels is nothing new. Replacing them is a new thing.
Cast factory wheel with porous leaks go way back. I can remember dismounting wheels for the local Pontiac dealer so they could epoxy the porous spot on the wheel of a brand new car.
Back then the wheels were made in Los Angeles by Rockwell the builder of the space shuttle.
Generally these cars were sold and none of the owners knew of the wheel patch. This also happened at other dealers back then. May still go on today at some.
Seems if they had time to figure out a jack leg fix, they could have taken the time to figure out a way to fix it the tight way.
There is a valid saying in the aircraft business that fits almost anywhere including Corvettes and that is:
“Never buy the “A” model of anything”
I own an older Corvette but will never buy another car from GM since the GM unions and the Obama administration screwed the stock holders and bond holders and gave control of the company to the f$%&%@* unions.