PIE0613B

Subject:
Engineering Information – Check Engine Lamp Illuminated on Driver Information Center (DIC) and/or Poor Fuel Fill,
DTC P0451 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.
This EI has been revised to add 2020-2021 Buick Envision and an Important statement to the Warranty Information. Please discard
PIE0613A.
Brand:
Model:
Buick
Envision
Cadillac
XT4
Chevrolet
Corvette
Model Year:
VIN:
from
to
from
to
2020
2021
—
—
Engine:
Transmission:
—
—
6.2L (LT2)
—
Involved Region or Country
North America
Condition
Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this EI.
Some customers may comment on a Check Engine Lamp illuminated on the Driver Information Center (DIC)
and/or poor fuel fill.
Technicians may find DTC P0451 set.
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.
Cause
Correction
If you encounter a vehicle with the above concern, perform the following steps and contact the engineer listed below with your findings.
1.
Pull the codes and confirm that DTC P0451 is set.
1.1.
Is DTC P0451 current or in history?
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
Important: Warranty coverage code E (Base Emission) applies for this Labor Operation.
If engineer was contacted or required information was provided, use:
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Labor Operation
Description
Labor Time
4087858*
Engineering Information - Check Engine Lamp Illuminated On (DIC) and/or Poor
Fuel Fill, DTC P0451 Set
0.3 hr
*This is a unique Labor Operation for bulletin use only.
Version
3
Modified
Released February 26, 2021
May 04, 2021 – Added the 2020–2021 Cadillac XT4 and updated the Correction.
May 25, 2021 – Added the 2020–2021 Buick Envision and an Important statement to the Warranty Information.
2