22-NA-101

Bulletin No.:
Service Bulletin
Date:
22-NA-101
November, 2022
TECHNICAL
Subject:
PTO (Power Take-Off) Kicks Out or Intermittently Disengages Unwanted
Brand:
Model:
Chevrolet
Silverado 4500HD,
5500HD, 6500HD
Involved Region or Country
Model Year:
from
to
2019
2022
VIN:
from
to
Engine:
Transmission:
United States, Mexico
Additional Options (RPOs)
Condition
Some customers may comment that the PTO (Power Take Off) will kick out and/or
disengages intermittently.
Cause
The cause of the condition may be a software concern with the Power Take Off Control
Module (PTOM).
The condition may happen if the wheel speed sensor has noise or shows movement with
the PTO engaged.
Correction
Reprogram the Power Take-Off Control Module.
Note: When reprogramming the Power Take-Off module (PTOM) it is recommended that
the Copy portion of the PTOM Copy and Restore procedure is run using the GDS2 Scan
Tool. This application is available under Module Diagnostics>(K44) Power Take-Off
Module>Configuration/Reset Functions>PTO Operation Mode>Copy and Restore.
Follow the steps for copying the PTO settings. Once the Copy function is complete the
PTOM can now be programed.
Restore:
Once the PTOM has been programed, the Restore portion of the procedure can be
performed. This portion restores any settings that may have been set in the removed
PTO module and may have been unique for the vehicle’s usage and/or application.
Service Procedure
Caution: Before downloading the update files, be sure
the computer is connected to the internet through a
network cable (hardwired). DO NOT DOWNLOAD or
install the files wirelessly. If there is an interruption
during programming, programming failure or control
module damage may occur.
• Ensure the programming tool is equipped with the
latest software and is securely connected to the
data link connector. If there is an interruption
during programming, programming failure or
control module damage may occur.
• Stable battery voltage is critical during
programming. Any fluctuation, spiking, over
voltage or loss of voltage will interrupt
programming. Install a GM Authorized
Programming Support Tool to maintain system
Copyright 2022 General Motors LLC. All Rights Reserved.
•
•
•
voltage. Refer to www.gmdesolutions.com for
further information. 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.
Follow the on-screen prompts regarding ignition
power mode, but ensure that anything that drains
excessive power (exterior lights, HVAC blower
motor, etc) is off
Please verify that the radio time and date are set
correctly before inserting USB drive into vehicle
for programming, otherwise an error will result.
Clear DTCs after programming is complete.
Clearing powertrain DTCs will set the Inspection/
Maintenance (I/M) system status indicators to NO.
Page 2
November, 2022
Important: The service technician always needs to
verify that the VIN displayed in the TLC left side drop
down menu and the top center window match the VIN
plate of the vehicle to be programmed prior to using
Service Programming System 2 (SPS2) for
programming or reprogramming a module.
• For the TLC application, service technicians need
to always ensure that the power mode (ignition) is
“ON” before reading the VIN from the vehicle’s
VIN master module and that they do not select a
VIN that is already in the TLC application memory
from a previous vehicle.
• If the VIN that shows up in the TLC top center
window after correctly reading the VIN from the
vehicle does not match the VIN plate of the
vehicle, manually type in the VIN characters from
the vehicle VIN plate into the TLC top center
window and use these for programming or
reprogramming the subject module with the
correct vehicle VIN and software and/or
calibrations.
• The Engine Control Module (ECM) is the master
module (for VIP vehicles) that TLC reads to
determine the VIN of the vehicle. If the VIN read
from the vehicle by TLC does not match the VIN
plate of the vehicle, the ECM also needs to be
reprogrammed with the correct VIN, software and
calibrations that match the vehicle’s VIN plate.
• The Body Control Module (BCM) is the master
module (for GEM vehicles) that TLC reads to
determine the VIN of the vehicle. If the VIN read
from the vehicle by TLC does not match the VIN
plate of the vehicle, the BCM also needs to be
reprogrammed with the correct VIN, software and
calibrations that match the vehicle’s VIN plate.
Bulletin No.: 22-NA-101
Bulletin No.: 22-NA-101
November, 2022
Page 3
Caution: Be sure the VIN selected in the drop down
menu (1) is the same as the vehicle connected (2)
before beginning programming.
5743643
Important: If the vehicle VIN DOES NOT match, the
message below will be shown
5877000
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November, 2022
Bulletin No.: 22-NA-101
5644477
Important: Techline Connect and TIS2WEB screens
shown above.
Important: If the same calibration/software warning is
noted on the TLC or SPS Summary screen, select OK
and follow screen instructions. After a successful
programming event, the WCC is located in the Service
Programming System dialogue box of the SPS
Summary screen. No further action is required. Refer to
the Warranty section of the bulletin.
1. Reprogram the Power Take Off Control module.
Refer to K44 Power Take-off Control Module:
Programming and Setup in the Service Manual.
Bulletin No.: 22-NA-101
November, 2022
Page 5
Important: The procedure in SI does not have a
process for programming but does have information to
capture on the PTO, follow normal SPS programming
steps.
5644478
set in the removed PTO module and may have
been unique for the vehicle’s usage and/or
application.
Note: The screenshots above are an example of
module programming and may not be indicative of the
specific module that is being programmed. Module
selection and VIN information have been blacked out.
Important: To avoid warranty transaction rejections,
you MUST record the warranty claim code provided on
the Warranty Claim Code (WCC) screen shown above
on the job card. Refer to callout 1 above for the location
of the WCC on the screen.
2. Record Warranty Claim Code on job card for
warranty transaction submission.
3. Once the PTOM has been programed, the Restore
portion of the procedure can be performed. This
portion restores any settings that may have been
Warranty Information
Important: Warranty coverage code E2 applies for this
module programming event. ECM reprogramming is
covered for 8 years/80,000 miles (U.S.) or 8 years/
130,000 km (Canada).
For vehicles repaired under the Emission coverage,
use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information:
Labor Operation
Description
Labor Time
*2888698
Reprogram Power Take-Off Control Module Reprogramming
for Software Anomalies
0.3 hr
*This is a unique Labor Operation for Bulletin use only.
Important: **To avoid warranty transaction rejections, carefully read and follow the instructions below:
• The Warranty Claim Code must be accurately entered in the “SPS Warranty Claim Code” field of the transaction.
• When more than one Warranty Claim Code is generated for a programming event, it is required to document all Warranty
Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the “SPS Warranty Claim
Code” field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code provided by
SPS/SPS2.
Page 6
November, 2022
Bulletin No.: 22-NA-101
Warranty Claim Code Information Retrieval
6125774
If the Warranty Claim Code was not recorded on the
Job Card, the code can be retrieved in the SPS2
system as follows:
1. Open TLC on the computer used to program the
vehicle.
2. Select and start SPS2.
3. Select Settings (1).
4. Select the Warranty Claim Code tab (2).
The VIN, Warranty Claim Code and Date/Time will be
listed on a roster of recent programming events. If the
code is retrievable, dealers should resubmit the
transaction making sure to include the code in the SPS
Warranty Claim Code field.
Version
2
Modified
Released May 12, 2022
Revised November 16, 2022 – Added note to correction and restore information to the
Correction and step 3.
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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