Some owners of 2020-2022 Chevy Corvette vehicles equipped with the Front Suspension Lift System (RPO E60) may comment on a Service Front Lift System message displayed in the DIC.
DTCs that may be set include:
- C103C (left front strut position sensor signal)
- C103E (left front strut position sensor signal)
- Symptom 64 (signal plausibility failure, where the control module detects a single input parameter operating outside the plausible range)
Note: If the vehicle has low mileage or previous work on this system has been identified, it is possible that air entrapment in the system may be causing this issue.
Attempt to operate the front lift system several times. Determine if the codes will reset or if the system will raise briefly and then sink back down. If this occurs, that may indicate that there is indeed air trapped within the front suspension lift system.
First perform the Prime Front Suspension Pump procedure with the scan tool five times in an attempt to purge any trapped air bubbles from the system.
Next, raise and lower the front suspension system through ten complete cycles. If the DTCs reset, perform the Front Hydraulic Suspension Bleed procedure and re-evaluate the concern.
As a way to double check the system, you can measure the distance between the floor and the lower portion of the vehicle’s front fascia.
A correctly operating vehicle should reach a front fascia height of at least 35mm within four seconds of pump operation.
