22-NA-214

Bulletin No.:
Service Bulletin
Date:
22-NA-214
October, 2022
TECHNICAL
Subject:
Stop/Start System Inhibited / IBS / Battery Monitor with Module Malfunction Indicator
Light (MIL) Illuminated - DTC U152D, P15FF, P305D, P305E, U01B0 Set
Brand:
Model:
Buick
Envision
Model Year:
CT4
Chevrolet
GMC
Brightdrop
to
2021
2023
VIN:
from
to
—
—
Engine:
Transmission:
All
All
2020
CT5
Cadillac
from
CT6
2023
Escalade Models
2021
Lyriq
2023
Colorado
2023
Corvette
2020
Silverado 1500 - New
(RPO J22,
VIN Digit 5 = A/D)
2022
Silverado 1500
2023
Suburban
2021
Tahoe
2021
2023
2023
2022
2023
Canyon
2023
HUMMER EV
2022
Sierra 1500 - New (RPO
J22, VIN Digit 5 = H/U)
2022
2022
Sierra 1500
2023
2023
2023
Yukon Models
2021
2023
EV 600
2022
2022
Involved Region or Country
North America, Middle East, Israel, Palestine, Argentina, Brazil, Chile, China, Colombia,
Ecuador, Paraguay, Peru, Uruguay, Cadillac Korea (South Korea), GM Korea Company,
Thailand, Australia/New Zealand, Egypt, Other Africa
Additional Options (RPOs)
Equipped with Engine Control-Stop/Start System (RPO KL9)
Condition
Some customers may comment on any of the following conditions:
• The Malfunction Indicator Lamp (MIL) is illuminated.
• The Stop/Start system is inoperative.
• A “Stop/Start System Disabled” Message appears on the DIC, if equipped.
Cause
Technicians may observe on a scan tool one or more of the following DTCs set:
• U152D: Body Control Module LIN Bus 9
• P15FF: Battery Monitor Sensor Signal Message Counter Incorrect
• P305D: DC/DC Converter Crank Control Circuit High Voltage
• P305E: DC/DC Converter Crank Control Circuit Low Voltage
• U01B0: Lost Communication with Battery Monitor Module
Intermittent Conditions and Poor Connections on the LIN Bus may also be a Cause.
Correction
Read the Information section and perform the Service Procedure.
Copyright 2022 General Motors LLC. All Rights Reserved.
Page 2
October, 2022
Important: This technical service bulletin (TSB) can
only be completed by BrightDrop dealers or BrightDrop
certified repair facilities who have met all BrightDrop
specific training, tool and equipment requirements.
Repairs must be performed by a technician who has
successfully completed the required training.
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.
Bulletin No.: 22-NA-214
Diagnostic Aids
•
•
•
Unplugging Battery Sensor connector or removing
it from the negative battery post will reset the learn
status. In the scan tool, an unlearned Battery
Sensor Module will display a SOC error
above 95%.
An excessive battery draw higher than ~250 mA
will prevent the B110 Battery Monitor Module learn
from completing successfully in 4 Hrs.
If the battery state of charge error is more than
10% then it will disable Stop/Start if equipped.
Preventing Sensor Reset
2022 Silverado or Sierra
Refer to PIT5912E for new 1500 pickup trucks (RPO
J22). May find DTC U3000 with a Front View Camera
causing a parasitic drain inhibiting the learn of the
battery sensor module.
Information
Auto Stop Criteria (If Equipped)
Important: Vehicles With RPO NSS or Police 9C1 KL9 Is Disabled. The Cluster will not have Auto Stop on
the Tachometer.
The engine control module (ECM) will send an
Autostop state message to the body control module
(BCM) and shut down the engine and restart the
vehicle when all of the criteria is met. The BCM will
transmit the Autostop state message to the instrument
cluster which will display the Autostop indicator on the
instrument cluster.
Reference Stop/Start Disable, Inhibit, and Restart
Reasons in Service Information to see all the
parameters and reasons why stop/start does not
enable.
Note: Not all parameters may be available in all
vehicles.
Battery Sensor Module
The B110 Battery Sensor Module also known as the
intelligent battery sensor (IBS) is a BCM LIN sensor
that tells the vehicle important 12V information such as
state of charge (SOC), voltage, current charge, drain,
etc. There are critical 12V features that depend on this
sensor:
• Battery Maintenance report
• Enhanced Battery Saver Mode (EBSM)
• Start/Stop System, if equipped
• Over the Air (OTA) updates
• Future features
6164935
Unless the 12V battery or the sensor is being replaced,
the Battery Sensor should stay attached to the negative
stud with its connector attached at all times.
• OK to disconnect at Green circled point or any
point further downstream towards chassis
ground stud.
• DO NOT disconnect Battery Sensor Module from
the negative battery post or the connector.
Service Procedure
Important: Depending on the Model Year, the
vehicle and the information that the Service
Personnel is referencing, the Battery Monitor
Module is also identified as the Battery Sensor
Module and the Battery Monitor Sensor in Service
Information, the EPC and the Global Labor Time
Guide.
1. Perform the Diagnostic System Check - Vehicle.
Refer to Diagnostic System Check - Vehicle in SI.
2. Are any of the listed Diagnostic Trouble Codes
(DTCs) Set?
⇒ If one or more of the listed DTCs are Set, Go to
Step 3.
⇒ If none of the listed DTCs are Set, refer to
Diagnostic Trouble Code (DTC) List - Vehicle.
Refer to Diagnostic Trouble Code (DTC) List Vehicle in SI.
Bulletin No.: 22-NA-214
October, 2022
Page 3
3. Diagnose the DTCs in the order that is defined in
the Diagnostic System Check - Vehicle.
4. Did you find and correct the Condition?
⇒ If you found and corrected the Condition, then
perform the Diagnostic Repair Verification.
Refer to Diagnostic Repair Verification in SI.
⇒ If you did not find and correct the Condition, Go
to Step 5.
5. Perform the following:
Note: You must use regionally required battery test
equipment for warranty repairs.
– Perform the Battery Inspection/Test procedure.
⇒ If you found and corrected the Condition, then
perform the Diagnostic Repair Verification.
Refer to Diagnostic Repair Verification in SI.
⇒ If you did not find and correct the Condition, Go
to Step 6.
6. Replace the Battery Monitor Module. Refer to
Battery Monitor Module Replacement in SI.
7. Perform the Diagnostic Repair Verification. Refer
to Diagnostic Repair Verification in SI.
Parts Information
Causal
Part
Description
Part
Number
Qty
X
Battery Sensor
Module
Refer
to EPC
1
Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
Description
Labor Time
4040070
Battery Monitor Module
Replacement
Use
Published
Labor
Operation
Time
Version Information
Version
1
Modified
Released October 25, 2022
Additional SI Keywords: IBS, Intelligent Battery Sensor,
Battery Monitor Module, Battery Sensor
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.
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