There are several reasons why a speed limitation may be in place on 2020-2025 Corvette models, such as an active Teen Driver mode or the convertible folding top is not properly secured.
The vehicle’s speed may be limited to a certain value or, at times, a “speed limited” message may appear on the Driver Information Center. No DTCs will be set
It’s important to understand why these limitations may occur and the operating characteristics of the related system.

The following systems have associated vehicle speed limitations based on the current status of the system.

Speed Limitation ...... System ........ ...Reason
155 mph (250 km/h) Folding Top Folding top open and properly stowed.
99 mph (160 km/h) Loss of Module Communication General loss of communication between modules.
85 mph (136 km/h) Teen Driver/Valet Mode Teen Driver or Valet Mode active (acceleration also limited).
85 mph (136 km/h) Suspension Suspension control module in full soft mode due to a system fault.
82 mph (132 km/h) Loss of OnStar Communication Loss of communication with the OnStar module.
62 mph (100 km/h) Brakes Brake hydraulic fluid leak detected.
58 mph (93 km/h) Folding Top Folding top not secured.
26 mph (42 km/h) Hood Front compartment (hood) not secured.
15 mph (24 km/h) Shuttle Mode (E-Ray) Shuttle Mode active.
2 mph (3 km/h) OnStar OnStar Stolen Vehicle active (may require ECM replacement to resolve).

Be sure to confirm the speed limitation and system operation in the appropriate Service Information as a diagnostic starting point before making any other repairs
Additional information about the operation of various systems can also be found in the Owner’s Manual.

Refer to Bulletin #24-NA-225 for more details.