16-NA-371

File in Section:
Bulletin No.:
Service Bulletin
Date:
16-NA-371
August, 2017
INFORMATION
Subject:
Information on Power On Reset, Battery Learn Procedure No Longer Required
Brand:
Model:
Model Year:
VIN:
from
to
2017
2018
from
Engine:
Transmission:
to
Encore
Envision
Buick
LaCrosse
Regal
Verano
ATS
Cadillac
CT6
CTS
XT5
Cruze
Chevrolet
Impala
Malibu
Trax
GMC
Acadia
(VIN N)
Involved Region or Country
North America, Middle East, Europe, Russia, South America, Israel, South Korea and
China
Additional RPO
KL9
Condition
The Technician may find the Battery Sensor Module 3 hour learn procedure is missing
from SI.
Information
A new feature is available starting with 2017 model
year vehicles with Start/Stop. The battery learn
procedure is no longer required after a battery
disconnect.
Starting in model year 2017, a feature was added
called Power on Reset.
The following parameters were added to the Diagnostic
Aids in the SI document, Stop/Start System
Malfunction;
Battery Sensor Module Battery State Information =
Available/Not Available
Copyright 2017 General Motors LLC. All Rights Reserved.
AND
Battery Sensor Module Reset Occurred - Using
Estimated State of Charge = Yes/No
GDS2 has been updated to display the above
parameters. They can be found under Engine Control
Module, Start/Stop System Data.
The vehicle will continue to use an estimated state of
charge until the vehicle sits for the three hours and then
it will start using the actual state of charge value. Stop/
start will function normally before and after the learn
occurs and will be seamless to the customer.
Page 2
August, 2017
Version
2
Modified
Aug 3, 2017 - Added the 2018 Model Year.
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.
Bulletin No.: 16-NA-371
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