23-NA-074

Service Bulletin
Bulletin No.:
23-NA-074
Date:
June, 2023
TECHNICAL
Subject:
Service Engine Soon (SES), Reduced Power, Service Brake, Reduced Steering and/or
Stabilitrak Message Illuminated on Driver Information Center (DIC), DTCs P0232,
P023F, P0641, P0651, P06A3, P0697, P07BE, P1000, P1009, P2535, P129D, P12A6,
P12A8, P2635, P3051, P3052, P3055, P3056, P305B, U0074, U0077, U0121, U0131,
U0151, U0415, U0420, U0672, U111A, U18A2, U18C6, U18D2, U2502, U2616 Set
This bulletin replaces PIT5847H. Please discard PIT5847H.
Brand:
Cadillac
Model:
Model Year:
VIN Breakpoint:
from
to
from
to
2019
2023
—
—
Engine:
Transmission:
All
All
XT5
XT6
Chevrolet
Blazer
GMC
Acadia
Copyright 2023 General Motors LLC. All Rights Reserved.
Page 2
Involved Region or Country
June, 2023
Bulletin No.: 23-NA-074
North America, Russia, Middle East, Iraq, Israel, Palestine, Japan, Cadillac Korea (South
Korea)
Some customers may comment on having one or more of the following messages
illuminated on the Driver Information Center (DIC):
Note: This concern may be intermittent.
Condition
• Service Engine Soon (SES)
• Reduced Power
• Service Brake
• Reduced Steering
• Stabilitrak
Technicians may find one or more of the following DTCs set:
• P0232 - Pump Control Circuit High Voltage
• P023F - Fuel Pump Control Circuit
• P0641 - 5V Reference 1 Circuit
• P0651 - 5V Reference 2 Circuit
• P0697 - 5V Reference 3 Circuit
• P06A3 - 5V Reference 4 Circuit
• P07BE - Transmission Park Position Switch 1-2 Not Plausible
• P1000 - Fuel Pump Driver Control Module Reset Count Message Counter Incorrect
• P1009 - Fuel Pump Driver Control Module Temperature High Signal Message Counter
Incorrect
• P129D - Fuel Pump Driver Control Module Ignition On/Start Switch Circuit Low
Voltage
• P12A6 - Fuel Pump Driver Control Module Enable Circuit Performance
• P12A8 - Fuel Pump Control Status Signal Message Counter Incorrect
• P2535 - Ignition On/Start Switch Circuit High Voltage
• P2635 - Fuel Pump Flow Performance
• P3051 - DC/DC Converter Output Voltage Sensor Circuit 1 Low Voltage
• P3052 - DC/DC Converter Output Voltage Sensor Circuit 2 Low Voltage
• P3055 - DC/DC Converter Output Voltage 1 Performance
• P3056 - DC/DC Converter Output Voltage 2 Performance
• P305B - DC/DC Converter Ignition On/Start Switch Circuit High Voltage
• U0074 - Control Module Communication Powertrain Expansion CAN Bus Off
Malfunction
• U0077 - Control Module Communication Chassis Expansion CAN Bus Off
• U0121 - Lost Communication with Electronic Brake Control Module
• U0131 - Lost Communication With Power Steering Control Module
• U0151 - Lost Communication With Inflatable Restraint Sensing and Diagnostic
Module
• U0415 - Invalid Data Received From Electronic Brake Control Module
• U0420 - Invalid Data Received From Power Steering Control Module
• U0672 - Lost Communication with Engine Coolant Pump
• U111A - Lost Communication with Engine Block Coolant Valve
• U18D2 - Lost Communication with Transmission Range Selector Control Module on
Powertrain Sensor CAN Bus
• U18A2 - Lost Communication with Fuel Pump Driver Control Module
• U18C6 - Transmission Range Selector Control Module Lost Communication with
Engine Control Module on Powertrain Sensor CAN Bus
• U2502 - Invalid Data Received From Electronic Brake Control Module on Chassis
Expansion CAN Bus
• U2616 - Fuel Pump Driver Control Module Lost Communication with ECM
Bulletin No.: 23-NA-074
June, 2023
Page 3
5874841
Cause
5874840
This condition may be caused by wire chafing on the battery tray support bracket.
Page 4
June, 2023
Bulletin No.: 23-NA-074
Correction
6326504
Bulletin No.: 23-NA-074
June, 2023
Page 5
6326606
1. Cut 76 mm (3”) long strips of deadener and wrap around the edges on the battery
tray bracket, as shown in the picture above.
6081026
2. Inspect the area near transmission cooler line bracket, as shown in the photo
above. If damage is found, repair the harness, and secure it as necessary.
Service Procedure
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.
Remove the battery tray. Refer to Battery Tray
Replacement in SI.
Parts Information
Causal
Part
Description
Part
Number
Qty
N/A*
DEADENER (Cut
to fit)
84190291
1
Page 6
June, 2023
Bulletin No.: 23-NA-074
Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor
Operation
Description
Labor Time
4088988*
Install three 76 mm (3”) Long
Strips of Deadener to the
Battery Tray Bracket
0.9 hr
*This is a unique Labor Operation for bulletin use only.
Version
2
Modified
Released April 19, 2023
Revised June 01, 2023 – Updated the Correction section.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
WE SUPPORT VOLUNTARY
TECHNICIAN
CERTIFICATION