NHTSA ID Number: 10171876
Manufacturer Communication Number: 16NA051
TSB/Document Date: 2020-03-02
Summary
This technical bulletin provides a procedure for connector kit and ambient air temperature sensor harness replacement to correct a MIL Illuminated with DTCs and active shutters being inoperative.
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TSB/Document ID: 16NA051
Replacement Service Bulletin Number:
MFR Communication Date: 2020-01-22
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM:WIRING
MFR Component System:
MFR Component Subsystem:
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Bulletin No.:
Service Bulletin
Date:
16-NA-051
January, 2020
TECHNICAL
Subject:
Active Shutters Inoperative, Malfunction Indicator Lamp (MIL) Illuminated - DTCs
P05AE, P059F, P151F, P0071, P0072, P0073, P0074, P3056, U1345, U1501, U1510,
U1511, U0285 Set
Brand:
Model:
Model Year:
LaCrosse
2017
2019
Malibu
(VIN Z)
2016
2019
VIN:
from
to
Engine:
Involved Region or Country
North America and Israel
Additional Options (RPO)
VRI and WMI
Condition
Some customers may comment on the Malfunction Indicator Lamp (MIL) being
illuminated.
The technician may find one or more of the following DTCs set:
• P05AE
• P059F
• P151F
• P0071
• P0072
• P0073
• P0074
• P3056
• U1345
• U1501
• U1510
• U1511
• U0285
Copyright 2020 General Motors
LLC. All Rights Reserved.
Page 2
January, 2020
Bulletin No.: 16-NA-051
This condition may be caused by the following conditions:
Cause
4787001
• Moisture intrusion past damaged (1) and/or missing (2) seals located in the B9, M60B
and/or X119 connectors for the ambient air temperature sensor wiring harness.
• Snow and/or ice buildup in the front lower grille area of the vehicle, which could
prevent the active aero shutters from opening or closing.
Correction
4527562
Inspect the ambient air temperature sensor wiring harness connectors B9 (2), M60B (3)
and the X119 (4, 5) for any signs of corrosion.
Bulletin No.: 16-NA-051
January, 2020
Page 3
Notice: The ambient air temperature sensor wiring harness must be replaced and
dielectric grease must be applied to all of the connectors for any of the following repairs.
• If any signs of water and/or corrosion was found on the ambient air temperature
sensor wiring harness (1), it must be replaced.
• If water and/or corrosion was found at the X119 connector (5), the main body wiring
harness connector must be replaced.
• If water and/or corrosion was found at the B9 connector (2), the ambient air
temperature sensor must be replaced.
• If water and/or corrosion was found at the M60B connector (3), the active shutter must
be replaced.
If the above inspection did not find any corrosion or damaged seals, and there are signs
of previous snow or ice in the active shutter system, explain to the customer that this can
occur during certain weather conditions and the MIL will clear when the shutters are in
proper working order. It will not impact the designed performance or reliability of the
vehicle. Please share this information with the customer, including a copy of this bulletin.
Parts Information
Warranty Information
Description
Part
Number
Qty
CONNECTOR KIT,
WRG HARN
13504371
1
23258243
1
HARNESS, AMB AIR TEMP
SEN WRG
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
5430860
Connector Kit Replacement
Use
Published
Labor
Operation
Time
5480328*
Ambient Air Temperature
Sensor Wiring Harness Replacement
0.5 hr
*This is a unique Labor Operation for bulletin use only.
Version
8
Modified
August 11, 2016 – Added DTCs and added Ambient Harness and repair.
February 7, 2017 – Added the 2017 Model Year for Malibu and LaCrosse model.
May 15, 2017 – Updated the Cause and Correction sections.
November 17, 2017 – Added additional DTCs to the Condition section.
December 21, 2017 – Added the 2018 Model Year.
March 14, 2019 – Added the 2019 Model Year, DTCs P05AE and P151F and RPO WMI.
January 22, 2020 – Added DTC U0285.
Additional Keywords: DTC U01B0
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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