18NA279

Service Bulletin
Bulletin No.:
18-NA-279
Date:
June, 2019
INFORMATION
Subject:
Passive Door Unlocking Inoperative and/or Enabling and Disabling of Passive
Unlocking
This Bulletin replaces PIT5629. Please discard PIT5629.
Brand:
Model:
Model Year:
VIN:
from
to
2019
2019
2020
2020
from
to
Engine:
Transmission:
All
All
CT6
Cadillac
Escalade
Models
XT4
XT6
Blazer
Bolt EV
Camaro
Cruze
Malibu
Chevrolet
Silverado
1500 (New
Model)
Spark
Suburban
2019
2019
Tahoe
Trax
Volt
Acadia
GMC
Sierra 1500
(New Model)
Yukon
Opel
Karl
Involved Region or Country
North America, South America, Russia, Middle East, Israel, Japan, South Korea,
Thailand
Additional Options (RPO)
Excluding Vehicles Equipped with Remote Ready Start Package (RPO AP8)
Condition
Some customers may comment that the passive door unlocking feature is inoperative
when pressing the button on any door handle or tailgate release handle. They may also
comment that all turn signals flash 4 times quickly when the button is pressed.
Correction
When using the following procedures, the owner can cycle between Passive Unlocking
Enabled to Passive Unlocking Disabled, and back.
Copyright 2019 General Motors LLC. All Rights Reserved.
Page 2
June, 2019
Bulletin No.: 18-NA-279
Service Procedure
With the vehicle off:
Starting State
Passive Unlocking is Enabled
Do:
Results in:
Press and Hold both Lock and Unlock FOB
buttons for 3 seconds.
Turn Signals flash 4 times and Passive
Unlocking is Disabled.
When the button on the door handle is pressed,
the Turn Signals flash 4 times and the doors
remain locked.
Note: Specific to Cadillac XT6 model ONLY,
turn signals flash 2 times.
Passive Unlocking is
Disabled
Press and Hold both Lock and Unlock FOB
buttons for 3 seconds.
Turn Signals flash 4 times and Passive
Unlocking is Enabled.
When the button on the door handle is pressed,
the door(s) will unlock.
Note: If it is necessary to contact the Technical
Assistance Center (TAC) for this issue, please obtain
the following information from the customer prior to
calling:
How long driver had vehicle?
Was issue there from beginning of vehicle delivery or
occurred after?
Where does the driver keep the FOB? Front pocket,
rear pocket, etc.
Single driver or multiple drivers for vehicle?
Does customer remember pressing both lock and
unlock on FOB at the same time?
Has anyone else used the FOB?
Customer Information
Please share this information with the customer,
including a copy of this bulletin.
Version
2
Modified
Released September 13, 2018
May 29, 2019 – Added the Blazer and XT6 Models, updated the Involved Region or
Country section and added a Note to the Results in section.
Additional Keywords: disable, enable, entry, flashes,
FOBs, four, free, gate, hand, hands, hands-free,
handsfree, inop, key, keyless, left, lift, liftgate, locking,
passenger, PEPS, right, tail, transmitter
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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