NHTSA ID Number: 10139113
Manufacturer Communication Number: 17NA329
TSB/Document Date: 2018-06-04
Summary
This Technical bulletin Reprograms the Radar Sensor Module-Long Range to correct a Forward Collision Alert Inoperative, Unwanted Application of Emergency Brakes and/or Adaptive Cruise Control
Drops Out condition.
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TSB/Document ID: 17NA329
Replacement Service Bulletin Number:
MFR Communication Date: 2017-11-29
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: LANE DEPARTURE: SENSING SYSTEM: RADAR
MFR Component System:
MFR Component Subsystem:
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File in Section:
Bulletin No.:
Service Bulletin
Date:
17-NA-329
December, 2017
TECHNICAL
Subject:
Forward Collision Alert Inoperative, Unwanted Application of Emergency Brakes and/
or Adaptive Cruise Control Drops Out
Brand:
Model:
Enclave,
LaCrosse
XT5
Traverse
Acadia
Model Year:
VIN:
from
to
2017
2018
from
to
Engine:
Involved Region or Country
North America and N.A. Export Regions
Additional Options (RPOs)
Equipped with COLL IMMINENT BRK-ALL SPEED, VEH FWD MOVEMENT, BRAKE
PREFILL, INTEGRATED BRAKE ASSIST (RPO UGN)
Condition
Some customers may comment on one or more of the following conditions:
• Forward Collision Alert (red light and alarm) is late or does not come occur.
• Vehicle applies emergency brakes with no vehicle in front in areas with overhead
structures.
• Adaptive Cruise control drops out in barren landscape areas. Adaptive Cruise Control
Temporarily Unavailable message appears in the IP.
Cause
This condition may be due to one of the following:
• Software occasionally takes longer than normal to identify a potential collision
situation.
• Radar reflections look like an actual vehicle causing a brief activation of brakes.
• Radar does not see enough reflections so it assumes it is blocked and goes offline.
Correction
An updated software calibration has been released to address these conditions. A learn
procedure (“service alignment” or “service calibration”) is not required.
Service Procedure
Warranty Information
Refer to Radar Sensor Module - Long Range
Programming and Setup in SI.
Important: Stable battery voltage is critical during
programming. Any fluctuation, spiking, over voltage or
loss of voltage will interrupt programming. Install the
EL-49642 SPS Programming Support Tool to maintain
system voltage. 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.
For vehicles repaired under warranty, use:
Copyright 2017 General Motors LLC. All Rights Reserved.
Labor
Operation
2810645
Description
Labor Time
Radar Sensor Module - Long
Range Reprogramming
with SPS
Use
Published
Labor
Operation
Time
Page 2
December, 2017
Bulletin No.: 17-NA-329
Version
2
Modified
Released October 16, 2017
November 29, 2017 – Added the Enclave and Traverse models and updated the
Warranty statement.
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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