Bulletin No.:

Service Bulletin

Date:

22-NA-201
October, 2022

TECHNICAL
Subject:

MIL L5P ECM/TCM Update with DTCs Set

Brand:

Model:

Chevrolet
GMC

Model Year:

VIN:

to

Silverado
2500HD/3500HD

2020

2021

L5P

Sierra
2500HD/3500HD

2020

2021

L5P

Copyright 2022 General Motors LLC. All Rights Reserved.

from

Engine:

from

to

Transmission:

Page 2
Involved Region or Country

October, 2022

Bulletin No.: 22-NA-201

United States, Canada, Mexico, Australia, New Zealand, Middle East, Israel, Palestine

Additional Options (RPOs)

Condition

Some customers may comment on a MIL (Malfunction Indicator Lamp) Illuminated in
the DIC.
The technician may find one or more of the following codes:
• DTC P01CB Cylinder 1 Injection Timing Retarded
• DTC P01CC Cylinder 1 Injection Timing Advanced
• DTC P01CD Cylinder 2 Injection Timing Retarded
• DTC P01CE Cylinder 2 Injection Timing Advanced
• DTC P01CF Cylinder 3 Injection Timing Retarded
• DTC P01D0 Cylinder 3 Injection Timing Advanced
• DTC P01D1 Cylinder 4 Injection Timing Retarded
• DTC P01D2 Cylinder 4 Injection Timing Advanced
• DTC P01D3 Cylinder 5 Injection Timing Retarded
• DTC P01D4 Cylinder 5 Injection Timing Advanced
• DTC P01D5 Cylinder 6 Injection Timing Retarded
• DTC P01D6 Cylinder 6 Injection Timing Advanced
• DTC P01D7 Cylinder 7 Injection Timing Retarded
• DTC P01D8 Cylinder 7 Injection Timing Advanced
• DTC P01D9 Cylinder 8 Injection Timing Retarded
• DTC P01DA Cylinder 8 Injection Timing Advanced
• DTC P020A Cylinder 1 Injection Timing
• DTC P020B Cylinder 2 Injection Timing
• DTC P020C Cylinder 3 Injection Timing
• DTC P020D Cylinder 4 Injection Timing
• DTC P020E Cylinder 5 Injection Timing
• DTC P020F Cylinder 6 Injection Timing
• DTC P021A Cylinder 7 Injection Timing
• DTC P021B Cylinder 8 Injection Timing
• DTC P02CC Cylinder 1 Injector Exceeded Minimum Learning Limit
• DTC P02CD Cylinder 1 Injector Exceeded Maximum Learning Limit
• DTC P02CE Cylinder 2 Injector Exceeded Minimum Learning Limit
• DTC P02CF Cylinder 2 Injector Exceeded Maximum Learning Limit
• DTC P02D0 Cylinder 3 Injector Exceeded Minimum Learning Limit
• DTC P02D1 Cylinder 3 Injector Exceeded Maximum Learning Limit
• DTC P02D2 Cylinder 4 Injector Exceeded Minimum Learning Limit
• DTC P02D3 Cylinder 4 Injector Exceeded Maximum Learning Limit
• DTC P02D4 Cylinder 5 Injector Exceeded Minimum Learning Limit
• DTC P02D5 Cylinder 5 Injector Exceeded Maximum Learning Limit
• DTC P02D6 Cylinder 6 Injector Exceeded Minimum Learning Limit
• DTC P02D7 Cylinder 6 Injector Exceeded Maximum Learning Limit
• DTC P02D8 Cylinder 7 Injector Exceeded Minimum Learning Limit
• DTC P02D9 Cylinder 7 Injector Exceeded Maximum Learning Limit
• DTC P02DA Cylinder 8 Injector Exceeded Minimum Learning Limit
• DTC P02DB Cylinder 8 Injector Exceeded Maximum Learning Limit

Cause

The cause of the condition may be software anomalies in the ECM and TCM.

Correction

Please update the ECM and TCM.
Note: If the vehicle sets DTCs U0100 and P0700, the ECM was updated but the TCM
was not. Please update the TCM.

Bulletin No.: 22-NA-201

October, 2022

Service Procedure
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.
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
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
• Clear DTCs after programming is complete.
Clearing powertrain DTCs will set the Inspection/
Maintenance (I/M) system status indicators to NO.

Page 3

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.

Page 4

October, 2022

Bulletin No.: 22-NA-201

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

Bulletin No.: 22-NA-201

October, 2022

Page 5

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 Engine Control and Transmission
Control Modules. Refer to K20 Engine Control
Module: Programming and Setup and
Transmission Control Module Programming and
Setup in SI.

Page 6

October, 2022

Bulletin No.: 22-NA-201

5644478

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.

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

*2889008

ECM and TCM Update for Injection Timing DTC Errors

0.6 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.

Bulletin No.: 22-NA-201

October, 2022

Page 7

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

1

Modified

Released October 14, 2022

Keywords: P01CB, P01CC, P01CD, P01CE, P01CF,
P01D0, P01D1, P01D2, P01D3, P01D4, P01D5,
P01D6, P01D7, P01D8, P01D9, P01DA, P020A,
P020B, P020C, P020D, P020E, P020F, P021A, P021B,

P02CC, P02CD, P02CE, P02CF, P02D0, P02D1,
P02D2, P02D3, P02D4, P02D5, P02D6, P02D7,
P02D8, P02D9, P02DA and/or P02DB

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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