Earlier this morning, Chevrolet released two service updates related to exposed porosity in wheels on some 2020 to 2021 Corvettes
GM has issued Service Updates N202315730 and N202315731 regarding wheel castings with exposed porosity affecting some 2020 – 2021 Corvettes. The amount of exposed porosity on the wheels is larger than that which is allowed by GM requirements.
Certain 2020 [and 2021] model year Chevrolet Corvette vehicles may have a condition where exposed porosity in wheels castings are larger than allowed and do not meet internal GM requirements. Vehicles in this field action are to have two sets of wheels inspected. The wheels on the vehicle are inspected under N202315730 and the extra wheels are inspected under this field action.
Correction: Dealers are to inspect the wheels and replace if necessary.
Along with both bulletins, several pictures were included showing examples of the porosity.
Click on the images below for a larger view:
A list of affected VINs for 2020 – 2021 Corvettes in dealer inventory has been issued to Chevrolet dealers.
In addition, involved Corvettes are marked as “open” in GM Global Connect’s Investigate Vehicle History screen under the Required Field Actions block.
Below is a copy of each service update: