2020-21 C8 Corvette owners have been reporting their Front Lift fluid reservoirs have been leaking and. GM has issued a Technical Service Bulletin for this and it’s as easy as installing a new cap to solve the problem.

The TSB is #N202321570.

This is not a recall, and if your car is on the list you will be notified next time you bring the car to your service department.
The issue stems from the current vented cap that is on the Front Lift’s fluid reservoir. This cap has a small hole and channels around the edge for venting air from the system as the front lift system is utilized.

The problem stems from that in the cap hole which can get larger over time.

The fix is a new non-vented cap (GM part number #85165040) that should solve the problem.

As some owners are only reporting small leaks, the best way to check your car is to remove the trim panels from the front trunk and look down to see if you have any fluid on the reservoir itself or the surrounding area.

The Front Lift uses DOT 4 hydraulic brake fluid which is very corrosive and not something you want dripping on metal or other unprotected services.