PIE0780

Subject:
Engineering Information (EI) – Check Engine Lamp Illuminated on Driver Information Center (DIC), DTCs P00C6,
P312B, P217D, P2149, P312C, P01BF, P2CA0, P216D, P2155, P228C, U101C Set
Attention:
Proceed with this EI ONLY if the customer has commented about this concern AND the PIE number is listed in the
Global Warranty Management / Investigate History link (GWM/IVH). If the customer has not commented about this
condition or the EI does not show in GWM/IVH, disregard the PIE, and proceed with diagnostics found in published
service information. THIS IS NOT A RECALL. Refer to the latest version of Service Bulletin 04-00-89-053 for more
details on the use of Engineering Information bulletins.
Brand:
Chevrolet
Model:
Model Year:
Corvette
VIN Breakpoint:
from
to
from
to
2023
2024
—
—
Engine:
Transmission:
5.5L (RPO LT6)
—
Involved Region or Country
U.S. Dealers ONLY
Condition
Some customers may comment on a Check Engine Lamp illuminated on the Driver Information Center
(DIC).
Technicians may find one or more of the following DTCs set:
•
•
•
•
•
•
•
•
•
•
•
P00C6 - Fuel Rail Pressure Low During Engine Cranking
P312B - Fuel Rail Pressure Sensor Internal Performance Bank 2 – Internal Component Fault
P217D - Cylinder 8 Fuel Injector High Control Circuit
P2149 - Cylinder 2 Fuel Injector High Control Circuit
P312C - Fuel Rail Pressure Sensor 2 Internal Performance Bank 2 – Internal Component Fault
P01BF - Fuel Rail Pressure Sensor Performance Bank 2 – Internal Component Fault
P2CA0 - Fuel Pressure Regulator Exceeded Control Limits - Low Pressure Bank 2
P216D - Cylinder 6 Fuel Injector High Control Circuit
P2155 - Cylinder 4 Fuel Injector High Control Circuit
P228C - Fuel Pressure Regulator Control Performance - Low Pressure
U101C - Lost Communication With Fuel Rail Pressure Sensor Bank 2 Sensor 2
Important: If failure is confirmed to be related to the high-pressure fuel sensor, it will be necessary to
replace the fuel rail, fuel pressure sensor and harness. Please DO NOT remove the fuel pressure sensor
from the fuel rail or remove the connector. The old injectors will be transferred to the new fuel rail assembly.
DO NOT change any wiring positions. DO NOT clean the components. If there is water on it, leave it.
Cause
GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to
gather information on vehicles PRIOR to repair that may exhibit this condition. As a result, this information will
be used to "root cause" the customer's concern and develop/validate a field fix.
Correction
Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws applicable to the activities it performs
under this bulletin, including but not limited to handling, deploying, preparing, classifying, packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between the procedures set forth in this bulletin and the laws that apply to your dealership, you must
follow those applicable laws.
If you encounter a vehicle with the above concern, perform the following steps and contact the engineer listed below with your findings.
Note: Please review the question below PRIOR to calling to help aid in diagnosis.
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Specific locations to inspect for Bank 1 and Bank 2 fuel rail assembly, as shown in the pictures above.
1.
Look for evidence of water/fluid collection on the pressure sensors connector/harness.
1.1. Look for evidence of water/fluid on the fuel rail harness.
2.
What is the pressure sensor connector wires position?
2.1. Take a clear close-up picture of the pressure sensor connector wires.
3.
Any damage at the pressure sensor connector/wire interface?
4.
Any damage at the 12-way or the mating connector wire interface?
5.
Any evidence of harness chafing?
6.
Any evidence of harness damage at the pressure sensor connector due to a sharp bend?
Contact Information
The Contact Information has been redacted.
Please include the following information if leaving a message:
–
Technician name
–
Dealer name and phone number
–
Complete VIN and repair order (R.O) number
On the repair order, document the date and time the call was placed (even if the engineer was not reached).
If engineering is unable to return the call within one hour, proceed with diagnosis and repair based on information found in SI.
Warranty Information
If an engineer was contacted or required information was provided, use:
Labor Operation
Description
Labor Time
4086348*
Engineering Information - Check Engine Lamp Illuminated on Driver
Information Center (DIC), Multiple DTCs Set
0.5 hr
4022370
Fuel Injection Fuel Rail Assembly Replacement - Bank 1
Use Published Labor Operation
Time
4022390
Fuel Injection Fuel Rail Assembly Replacement - Bank 2
*This is a unique Labor Operation for bulletin use only.
2
Version
1
Modified
Released February 22, 2024
3