21-NA-061

Bulletin No.:
Service Bulletin
Date:
21-NA-061
March, 2023
INFORMATION
Subject:
Brand:
BrightDrop
Buick
Cadillac
Chevrolet
GMC
Information on Using EL-52545 When Diagnosing PEPs Transmitter Key Fobs
Model:
Passenger
Cars and
Trucks
(including
Medium
Duty)
Model Year:
from
VIN:
to
from
to
2023
—
—
Engine:
Transmission:
All
All
2022
2020
Involved Region or Country
North America ONLY
Additional Options (RPOs)
Equipped with LOCK CONTROL, ENTRY-REMOTE ENTRY, EXTENDED RANGE,
PASSIVE ENTRY, ALL DOORS (RPO ATH)
Service Information
Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.
Important: This technical service bulletin (TSB) can
only be completed by certified repair facilities who have
met all specific training, tool and equipment
requirements pertaining to the vehicle Brand and Model
serviced. Repairs must be performed by a technician
who has successfully completed the required training.
The EL-52545 TPMS and RF Tool must be used to
verify that the VIN learned to the transmitter key fob
matches the VIN of the service vehicle as part of the
diagnostic procedure.
This bulletin provides information on how to use this
Special Tool to identify key fob information, including
the last eight digits of the VIN associated with the fob.
Copyright 2023 General Motors LLC. All Rights Reserved.
Important: U.S. Only: For 2021 and newer model
year vehicles with RPO ATH, key fob replacement
claims must be routed to the Warranty Support Center
for approval. A picture of the Signal Detection screen
must be attached to the submitted transaction as
confirmation that the VIN on the service key fob
matches the VIN on the warranty transaction. Refer to
Service Bulletin #21-NA-068 for further details.
The EL-52545 TPMS and RF Tool ‘Signal Detection
Screen’ displays the VIN and other information
imbedded in the key fob.
Page 2
March, 2023
Bulletin No.: 21-NA-061
Using the EL-52545 to Read VIN from
Key Fob
Location on Tool for fob placement.
5744720
5744717
1. From the Main Menu select: Signal Detect.
5744721
5744719
2. From the Fob/Key ID screen, the tool will instruct to
place the fob on the small pocket on the back of
the tool and press OK.
3. The Signal Detection screen will display the above
image(s).
The EL-52545 can be used to read fob information from
other types of fobs and keys.
For additional information on how to use the EL–52545,
review the December 2020 Emerging Issues Seminar
10220.12V El -52545 video. In Canada, review the
Feature Topic for the January 2021 TAC TALK.
Bulletin No.: 21-NA-061
March, 2023
Page 3
Tool Software Updates
5744722
Dealers are responsible for having the latest software
installed prior to tool use.
⇒ WebVT is used to update the EL -52545 and can be
downloaded from the Special Tools and Software
Updates link found under the Service tab in
GlobalConnect.
Version
4
Modified
Released March 10, 2021
Revised March 22, 2021 – Updated the Important statement under Service Information to
apply to U.S. only.
Revised August 30, 2022 – Added the 2022–2023 Model Years.
Revised March 16, 2023 – Added BrightDrop Models.
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.
WE SUPPORT VOLUNTARY
TECHNICIAN
CERTIFICATION