21-NA-189

Service Bulletin
Bulletin No.:
21-NA-189
Date:
July, 2022
INFORMATION
Subject:
Information on Super Cruise Escalation Cancellation
Brand:
Model:
CT4
CT5
Cadillac
2021
XT6
2022
Lyriq
2023
Suburban
Silverado 1500 LTD
(RPO J21, VIN Digit
5 = W / Y)
Silverado 1500 New
(RPO J22, VIN Digit
5 = A / D)
Yukon
GMC
Sierra 1500 Limited
(RPO J21, VIN Digit
5 = 8 / 9)
Sierra 1500 New
(RPO J22, VIN Digit
5=H/U
HUMMER EV
Involved Region or Country
to
to
Engine/
Propulsion:
Transmission:
—
—
—
—
2023
2023
2023
2022
2022
2023
2023
2022
2022
2022
2023
North America, China
Information
In the event a customer comes in stating that they are
having trouble cancelling an Escalation (Red State) in
Super Cruise, please use this guide to explain to them
the proper way the system will recognize they
appropriately took control.
While in Super Cruise, there are many reasons in which
the system may require the driver to come back into
control of the vehicle. In order to notify the driver to do
so, the system enters a “Red Escalation” which
consists of the following:
• Super Cruise Icon in the IPC turning Red
• Super Cruise Message in the IPC stating to take
control of the vehicle
• The Light Bar at the top of the steering wheel will
flash Red
• Non-visual alert such as Chime or Haptic based
on the user settings
Copyright 2022 General Motors LLC. All Rights Reserved.
VIN:
from
2021
Escalade Models
Tahoe
Chevrolet
Model Year:
from
Once a Super Cruise Escalation occurs, the primary
method to notify the system that you have regained
control of the vehicle is placing the driver’s hands on
the wheel at the Two & Ten o’clock positions or the five
& seven o’clock positions and fully gripping the wheel.
The system senses the driver’s hands on 2/3 zones on
the steering wheel. Once two zones achieved,
escalation subsides immediately.
1. The front left side in the areas highlighted below
are a zone.
2. The front right side in the areas highlighted below
are a zone.
3. The full circumference of the rear of the wheel is
a zone.
Page 2
July, 2022
Bulletin No.: 21-NA-189
5893437
There are secondary override applications utilizing the
steering wheel torque, accelerator pedal application,
and brake pedal application. These are harder to
achieve as they are designed to ensure true driver
intent / control before the system will relinquish lateral
control to the driver.
This is done so in the event the steering wheel is
bumped, a pedal hit, or the vehicle hits a pothole
(inducing steering feedback) a driver in control
indication is not inadvertently tripped.
Version
3
Modified
Released August 19, 2021
Revised January 14, 2022 – Added the 2022 Model Year and the Cadillac XT6.
Revised July 25, 2022 – Added the CT4, CT5, Lyriq, Tahoe, Suburban, Silverado, Sierra,
HUMMER EV, Yukon Models and added China to the Involved Region or Country
section.
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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