19NA182

Bulletin No.:
Service Bulletin
19-NA-182
Date:
August, 2019
TECHNICAL
Subject:
Brand:
Buick
Cadillac
Chevrolet
Steering Assist Is Reduced Message and One of the Following DTCs Are Set:
C056D, U0415
Model:
Model Year:
VIN:
from
to
LaCrosse
2014
2016
Regal
2013
2017
XTS
2014
2019
Impala
2014
2019
Malibu
2016
2018
from
to
Engine:
Transmission:
All
All
Involved Region or Country
North America and N.A. Export Regions
Condition
Some customers may comment on a loss of steering assist along with the following
message; Steering Assist Is Reduced.
Cause
The cause of the condition may be a software anomaly.
Correction
Note: 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 12 V jumper or booster
pack disconnected from the AC voltage supply. DO NOT connect a battery charger.
Technicians will need to reprogram the power steering control module with the latest
software. Refer to K43 Power Steering Control Module: Programming and Setup in SI.
Parts Information
Warranty Information
No parts are required for this repair.
For vehicles repaired under warranty, use:
Labor
Operation
Description
Labor Time
2810625*
Power Steering Control
Module Reprogramming
with SPS
Use
Published
Labor
Operation
Time
*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.
Copyright 2019 General Motors LLC. All Rights Reserved.
Page 2
August, 2019
Bulletin No.: 19-NA-182
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 August 09, 2019
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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