PIC6434A

Bulletin No.: PIC6434A
Published date: 11/8/2021
Preliminary Information
PIC6434A Service Front Suspension Lift System Message Setting A
C103C And/Or C103E Symptom 64
Models
Brand:
Chevrolet
Model:
Corvette
VIN:
Model Years:
2020 - 2022
from
All
Engine:
to
All
All
Transmissions:
All
Involved
Region or North America and Export Regions
Country
Additional
Equipped with RPO E60 Front Suspension Lift System
RPO
Some technicians may have a vehicle that displays a Service Front Suspension Lift System message on
the DIC. Upon closer inspection, they will nd that a C103C and/or a C103E sym64 DTCs have also set.
Because these DTCs are capable of setting in more than one module on these vehicles, if the technician
Condition
con rms that these codes are set in the K218 (Front Suspension Leveling / Lifting Hydraulic Power Pack
Module), before any diagnosis or repairs are attempted, rst check the mileage and service history on
the vehicle.
If there is low mileage on the vehicle or previous service work on this system has been identi ed, the
Cause
rst thing to consider is possible air entrapment in the system that may be causing this issue.
Correction:
If this PIC describes the concern that the vehicle is exhibiting, attempt to operate the front lift system several
times. Determine if the codes will reset or if the system will raise brie y and then sink back down. If this occurs,
that may indicate that there is indeed air trapped within the front suspension lift system. As always, follow the
published information in SI for these DTCs, paying particularly close attention to "Test B" at the end of the
owchart. First perform the "Prime Front Suspension Pump" procedure with the scan tool ve times in an
attempt to purge any trapped air bubbles from the system. Next, raise and lower the front suspension system
through 10 complete cycles. If the DTCs reset, be sure to perform the Front Hydraulic Suspension Bleed
procedure and reevaluate the concern.
As a way to double check the system, a technician can measure the distance between the oor and the lower
portion of the vehicle's front fascia. A correctly operating vehicle should reach a front fascia height of at least 35
mm within 4 seconds of pump operation.
Warranty Information
Because the repair may be one of several di erent service procedures, be sure to select the labor op that most
closely matches the actual repair that was made.
Version History
Version
1
Modi ed
03/23/2021 - Created on.
11/08/2021 - Updated Model Years.
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