20NA053

Bulletin No.:
Service Bulletin
Date:
20-NA-053
March, 2020
TECHNICAL
Subject:
DC Fast Charge Robustness Improvements
Brand:
Model:
Chevrolet
Bolt EV
Model Year:
VIN:
from
to
from
to
2017
2019
All
All
Engine:
Transmission:
All
All
Involved Region or Country
North America, Middle East
Condition
GM is making available similar DC Fast Charge robustness improvements for 2017-2019
as were implemented in the 2020 model year Bolt EV. If a customer comments about a
problem with or an inability to DC Fast Charge, it is recommended to perform this bulletin.
In addition, if a customer finds that DC Fast Charging is taking a long time to charge in
winter below 0°C (32°F) outside temperature, this calibration will improve the charging
rate of an empty pack.
Cause
Improved performance is now available based on customer feedback.
Correction
Technicians should scan for DTCs to capture any codes.
Using SPS, verify if the vehicle has the latest calibration in the K114B Hybrid/EV
Powertrain Control Module 2.
• If the vehicle is not up-to-date, then program the Hybrid/EV Powertrain Control Module
2 with the improved calibrations using the Service Procedure section.
– After programming, drive the vehicle for a moment above 30 km/h (19 mph) to
re-enable fast charging after flashing. Charge the vehicle using the dealership DC
Fast Charger for at least 5 minutes to verify operation. If the vehicle fails to charge,
scan for DTCs and follow Plug-In Charging Malfunction (DC Charging) in SI.
• If the vehicle already has the latest available calibration from a previous repair
attempt, no further updates are available. Attempt to charge the vehicle with the DC
Fast Charge station at the dealership. If it charges without issue, there may be a
problem with the particular DC Fast Charge station the customer was using.
Encourage the customer to contact the station manufacturer. Most stations have a
phone number or website for customer service. If the vehicle does not DC Fast
Charge, then follow Plug-In Charging Malfunction (DC Charging) in SI.
Service Procedure
•
Caution: Before downloading the update files, be sure
the computer is connected to the internet through a
network cable (hardwired). DO NOT DOWNLOAD or
install the files wirelessly. If there is an interruption
during programming, programming failure or control
module damage may occur.
Note: Carefully read and follow the instructions below.
•
Ensure the programming tool is equipped with the
latest software and is securely connected to the
data link connector. If there is an interruption
during programming, programming failure or
control module damage may occur.
•
•
Copyright 2020 General Motors LLC. All Rights Reserved.
Stable battery voltage is critical during
programming. Any fluctuation, spiking, over
voltage or loss of voltage will interrupt
programming. Install a GM Authorized
Programming Support Tool to maintain system
voltage. Refer to www.gmdesolutions.com for
further information. If not available, connect a fully
charged 12V jumper or booster pack disconnected
from the AC voltage supply. DO NOT connect a
battery charger.
Turn OFF or disable systems that may put a load
on the vehicles battery such as; interior lights,
exterior lights (including daytime running lights),
HVAC, radio, etc.
Clear DTCs after programming is complete.
Clearing powertrain DTCs will set the Inspection/
Maintenance (I/M) system status indicators to NO.
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March, 2020
Bulletin No.: 20-NA-053
5431207
Important: If the Same Calibration/Software Warning
is noted on the SPS screen, select OK and follow
screen instructions. After a successful programming
event, the WCC is located in the Service Programming
System dialogue box of the SPS Summary screen. No
further action is required. Refer to the Warranty
Information section of this bulletin.
1. Reprogram the Hybrid/EV Powertrain Control
Module 2. Refer to K114B Hybrid/EV Powertrain
Control Module 2: Programming and Setup in SI.
Bulletin No.: 20-NA-053
March, 2020
Page 3
5431209
Important: To avoid warranty transaction rejections,
you MUST record the warranty claim code provided on
the SPS Warranty Claim Code (WCC) screen on the
job card. Refer to callout 1 above for the location of the
WCC on the SPS screen.
2. Record the SPS Warranty Claim Code on the job
card for warranty transaction submission.
Warranty Information
Note: If using the programming Labor Operation
(2886698), then follow Voltec (V) Warranty coverage.
For vehicles repaired under the Voltec (V) coverage,
use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information.
Labor
Operation
Description
Labor Time
Hybrid Powertrain Control
Module 2 DC Fast Charge
Robustness Improvements
0.5 hr
2886698*
5019989
Hybrid Electronics and
Charging - Customer
Concern Not
Duplicated (CCND)
Use
Published
Labor
Operation
Time
*This is a unique Labor Operation for bulletin use only.
Important: *To avoid warranty transaction rejections,
carefully read and follow the instructions below:
• The SPS Warranty Claim Code must be accurately
entered in the “SPS Warranty Claim Code” field of the
transaction.
• When more than one Warranty Claim Code is
generated for a programming event, it is required to
document all Warranty Claim Codes in the “Correction”
field on the job card. Dealers must also enter one of the
codes in the “SPS Warranty Claim Code” field of the
transaction, otherwise the transaction will reject. It is
best practice to enter the FINAL code provided by SPS.
Page 4
March, 2020
Bulletin No.: 20-NA-053
Warranty Claim Code Information Retrieval
If the SPS Warranty Claim Code was not recorded on
the Job Card, the code can be retrieved in the SPS
system as follows:
1. Open TIS on the computer used to program the
vehicle.
2. Select and start SPS.
3. Select Settings.
4. Select the Warranty Claim Code tab.
The VIN, Warranty Claim Code and Date/Time will be
listed on a roster of recent programming events. If the
code is retrievable, dealers should resubmit the
transaction making sure to include the code in the SPS
Warranty Claim Code field.
Version
1
Modified
Released March 02, 2020
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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