22NA002

Bulletin No.:
Service Bulletin
Date:
22-NA-002
January, 2022
INFORMATION
Subject:
Malfunction Indicator Lamp Illuminated with DTCs P0299/P0234 Set During Cold or
Freezing Temperatures
Brand:
Model:
Chevrolet
Equinox
GMC
Terrain
Model Year:
VIN:
from
to
from
to
2018
2022
—
—
Engine:
Equipped
with 1.5L
Engine
(RPO LYX)
Transmission:
All
Involved Region or Country
U.S. and Canada
Condition
Some customers may comment on a Malfunction Indicator Lamp illuminated or a reduced
power complaint.
Technicians may find the following DTCs set/stored.
• P0234 – Engine Underboost
• P0299 – Engine Underboost
Cause
This condition may be caused by a moisture build up inside the charge air cooler (CAC).
This condition is more likely on the smaller displacement engines where an air-to-air
charge air cooler is used.
– In cold temperatures, ambient and PCV moisture can freeze in the charge air cooler,
restricting flow, and causing DTC P0299 and/or P0234.
Correction
If there is a check engine light with a P0234 or P0299 DTC during cold weather driving,
refer to Turbocharger Wastegate Regulator Solenoid Valve Inspection below.
– Frozen oil/water contaminant in the Turbocharger Wastegate Regulator Solenoid Valve
(TCV) is often concurrent with vehicle operating conditions that cause CAC freezing. If
either DTC P0234 or P0299 is set, refer to PIP5812C for Turbocharger Wastegate
Regulator Solenoid Valve Inspection. Cleaning or replacing the TCV solenoid should
be performed in addition to CAC protection measures specified in this bulletin.
Note: The Engine Control Module calibration should be updated. The new calibration will
enable a revised transmission shift pattern during cold weather operation, which does not
use overdrive as frequently. As a result, some customers may notice elevated engine
RPMs during highway operation. This operating mode will reduce the potential for ice to
build up inside the charge air cooler, and the potential for setting P0299 or P0234
diagnostic codes.
The customer must be informed by dealership personnel by explaining the new engine
control module calibration and its effects on transmission shift patterns at highway
speeds during cold weather to avoid a customer return to the dealership after the
programming is completed.
Note: For additional DTC P0300 and/or P0299/P2227 corrections for 2018-2021, refer to
bulletin 18-NA-020. 2022 models will be added once parts are available.
Copyright 2022 General Motors LLC. All Rights Reserved.
Page 2
January, 2022
Engine Control Module Programming
Important: Updated Engine Control Module
calibration: The updated calibration will enable a
revised transmission shift pattern during cold weather
operation which does not use overdrive as frequently.
As a result, the customer may notice elevated engine
RPMs during highway operation. This operating mode
will reduce the potential for ice to build up inside the
charge air cooler, and the potential for setting P0299 or
P0234 diagnostic codes.
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.
Bulletin No.: 22-NA-002
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.
Caution: Be sure the VIN selected in the drop down
menu (1) is the same as the vehicle connected (2)
before beginning programming.
Bulletin No.: 22-NA-002
January, 2022
Page 3
5743643
Important: If the vehicle VIN DOES NOT match, the
message below will be shown.
5877000
Page 4
January, 2022
Bulletin No.: 22-NA-002
5644477
5431207
Bulletin No.: 22-NA-002
January, 2022
Page 5
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 Information section of this bulletin.
1. Reprogram the ECM. Refer to K20 Engine Control
Module: Programming and Setup in SI.
5644478
Page 6
January, 2022
Bulletin No.: 22-NA-002
5431209
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 SPS Warranty Claim Code (WCC) screen shown
above on the job card. Refer to callout 1 above for the
location of the WCC on the SPS screen.
2. Record the SPS Warranty Claim Code on the job
card for warranty transaction submission.
The customer must be educated by dealership
personnel by explaining the new engine control
module calibration and its effect on transmission
shift patterns at highway speeds during cold
weather to avoid a customer return to the
dealership after the programming is completed.
Bulletin No.: 22-NA-002
January, 2022
Page 7
Warranty Information
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).
Labor Operation
Description
Labor Time
2888348*
Engine Control Module Re-programming with SPS for Equinox/
Terrain
0.3 hrs.
*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.
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
2
Modified
Released January 07, 2022
Revised January 13, 2022 - Removed LTG RPO from Engine, Add Reference to PIP581C
in Correction section and Added ECM Programming 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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