20-NA-218

Service Bulletin
Bulletin No.:
20-NA-218
Date:
May, 2022
TECHNICAL
Subject:
Brand:
Buick
Cadillac
Possible Crank No Start or Extended Crank with DTC P12A6
Model:
Breakpoint Date:
Engine:
to
from
to
Encore
2021
2021
SOP
April
12, 2021
1.4L (LE2)
Encore GX
2020
2021
SOP
March
6, 2021
1.2L (LIH)
Regal
2019
2020
—
—
1.5L (LFV)
CT5
2020
2020
—
—
3.0L (LGY)
2021
2021
SOP
November
4, 2020
5.3L (L84),
6.2L (L87)
Camaro
2021
2021
SOP
February
15, 2021
2.0L (LTG)
Corvette
2020
2020
—
—
6.2L (LT2)
1.5L (LYX)
Escalade
Escalade ESV
Equinox
2020
2021
SOP
January
14, 2021
Express
2021
2021
SOP
February
11, 2021
6.6L (L8T),
4.3L (LV1)
2021
SOP
January
15, 2021
1.5L (LFV)
Malibu
Chevrolet
Model Year:
from
2019
2021
2.0L (LTG)
Silverado 1500
(New Model)
2019
2019
—
—
LV3, L82,
L84, L87.
Silverado 1500
2020
2021
SOP
February
11, 2021
4.3 (LV3) 5.3
(L82, L84)
6.2 (L87)
Silverado
2500HD/3500HD
2020
2021
SOP
February
11, 2021
6.6 (L8T)
2021
2021
SOP
November
4, 2020
5.3L (L84),
6.2L (L87)
Trailblazer (VIN M)
2020
2021
SOP
March
6, 2021
1.2L (LIH)
Savana
2021
2021
SOP
February
11, 2021
6.6L (L8T),
4.3L (LV1)
Sierra 1500
(New Model)
2019
2019
—
—
LV3, L82,
L84, L87.
Sierra 1500
2020
2021
SOP
February
11, 2021
4.3 (LV3) 5.3
(L82, L84)
6.2 (L87)
Sierra
2500HD/3500HD
2020
2021
SOP
February
11, 2021
6.6 (L8T)
Terrain
2020
2021
SOP
January
14, 2021
1.5L (LYX)
2021
2021
SOP
November
4, 2020
5.3L (L84),
6.2L (L87)
Suburban
Tahoe
GMC
Yukon
Yukon XL
Copyright 2022 General Motors LLC. All Rights Reserved.
Transmission:
—
Page 2
Brand:
Holden
May, 2022
Model:
Model Year:
Bulletin No.: 20-NA-218
Breakpoint Date:
from
to
Astra Hatch & Wagon
2017
2020
LE2
Astra Sedan
2017
2018
LE2
Commodore
2018
2020
—
to
Engine:
from
—
Transmission:
LTG
Equinox
2018
2020
LYX
Silverado 1500
2020
2021
—
—
Involved Region or Country
North America, Europe, Uzbekistan, Russia, Middle East, Palestine, Israel, Brazil, Chile,
Paraguay, Colombia, Ecuador, Peru, Uruguay, Argentina, Japan, Thailand, GM Korea
Company, Cadillac Korea (South Korea), Australia/New Zealand, Egypt, Other Africa
Condition
Some customers may comment on a possible crank no start or extended crank.
Technicians may find DTC P12A6 set current or in recent history. This could be
accompanied with a crank no start or extended crank issue and additional DTCs P00C6,
P00F4, P0098, P2199 and/or P0096.
Cause
The cause of the condition may be a software anomaly in the Engine Control
Module (ECM).
Correction
Reprogram the ECM.
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
voltage. Refer to www.gmdesolutions.com for
further information. If not available, connect a fully
charged 12V 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.
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.: 20-NA-218
May, 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
Page 4
May, 2022
Bulletin No.: 20-NA-218
5644477
Important: Techline Connect screen 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. Document the WCC on the job card.
No further action is required. Refer to the Warranty
Information section of this bulletin.
1. Reprogram the Engine Control Module (ECM).
Refer to K20 Engine Control Module: Programming
and Setup in SI.
Bulletin No.: 20-NA-218
May, 2022
Page 5
5644478
Note: The screenshot above is 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 the Warranty Claim Code on the 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
2887038*
Description
Labor Time
Engine Control Module
Reprogramming for Crank
No Start or Extended Crank
Condition
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
May, 2022
Bulletin No.: 20-NA-218
Warranty Claim Code Information Retrieval
If the SPS Warranty Claim Code was not recorded on
the Job Card, the code can be retrieved in the SPS
system as follows:
1. Open TLC/TIS on the computer used to program
the vehicle.
2. Select and start SPS/SPS2.
3. Select Settings.
4. Select the Warranty Claim Code tab.
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
13
Modified
Released November 17, 2020
December 18, 2020 – Added 2020 Truck Models and updated programming information
in the Service Procedure.
January 15, 2021 – Added the 2020 Chevrolet Corvette and North America to the
Involved Region or Country section.
February 08, 2021 – Added 2020 Cadillac CT5, 2019 Chevrolet Silverado 1500 and GMC
Sierra 1500 and engine RPOs.
February 23, 2021 – Added the 2021 Model Year to Chevrolet Silverado 1500, 2500HD/
3500HD and GMC Sierra 1500, 2500HD/3500HD with Breakpoint dates, updated the
Condition section with additional DTCs and updated the Involved Region or Country
section.
March 08, 2021 – Added 2021 Buick Encore GX and Chevrolet Trailblazer (VIN M) with
breakpoints.
March 19, 2021 – Added 2020 Buick Encore GX and Chevrolet Trailblazer (VIN M) and
updated the programming template.
April 05, 2021 – Added 2020 and 2021 Chevrolet Equinox and GMC Terrain and added
Brazil to Involved Region or Country section.
April 23, 2021 – Added the Buick Regal and Chevrolet Malibu models, updated the
Involved Region or Country section and updated the programming bullet points under
Service Procedure.
May 07, 2021 – Added the Chevrolet Camaro and the 2021 Malibu with LTG engine.
September 01, 2021 – Added the 2021 Buick Encore, Chevrolet Express and GMC
Savana with breakpoint dates and engine builds and updated the Service Procedure.
February 16, 2022 – Added Holden Models and updated the programming procedure.
May 19, 2022 – Added the Holden Silverado 1500.
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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