PIE0742

Subject:
Engineering Information - Check Engine Lamp Illuminated on Driver Information Center (DIC), DTCs P0236, P0238
and/or P0299 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 Service Bulletin 04-00-89-053 for more details on the use of
Engineering Information bulletins.
Brand:
Model:
Cadillac
XT4
Chevrolet
Blazer
GMC
Acadia
Model Year:
VIN Breakpoint:
from
to
from
to
2022
2023
—
—
Engine:
Transmission:
Equipped with 2.0L
(RPO LSY)
—
Involved Region or Country
U.S. Dealers ONLY
Condition
Some customers may comment on Check Engine Lamp illuminated on the Driver Information Center (DIC).
Technicians may find one or more of the following DTCs set:
•
•
•
Cause
P0236 - Turbocharger Boost Sensor Performance
P0238 - Turbocharger Boost Sensor Circuit High Voltage
P0299 - Engine Underboost
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:
1.
Check for continuity
2.
Make sure all connections are secure on wire harness all the way back to ECM for all 3 connector pinout
3.
Verify that the DTC code is still being set when vehicle restarts
4.
Call the engineer listed for further instructions.
Contact Information
The Contact Information has been redacted.
Please include the following information if leaving a message:
–
Technician name
1
–
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 engineer was contacted or required information was provided, use:
Labor Operation
Description
Labor Time
4088958*
Engineering Information - Check Engine Lamp Illuminated on (DIC), DTCs
P0236, P0299, P0238 Set
0.5 Hrs.
*This is a unique Labor Operation for bulletin use only.
Version
1
Modified
Released March 15, 2023
2