Service Bulletin

Bulletin No.:

22-NA-007

Date:

May, 2023

TECHNICAL
Subject:

Poor Engine Performance in Extremely Cold Weather Conditions for LE2 Engines,
Charge Air Cooler (CAC) Icing - Malfunction Indicator Lamp (MIL) Illuminated, DTC
P0299, P0234, P0236, P2227, P00C7 Set

Brand:

Model:

Chevrolet

Cruze

Model Year:

VIN:

from

to

from

to

2016

2019

—

—

Engine:

Transmission:

1.4L
Turbo (LE2)

—

Involved Region or Country

North America

Condition

Some customers may comment that when driving short distances and/or slow speed
driving cycles, their vehicle experiences one or several of the following conditions within
the first 10 to 15 minutes of vehicle operation in extremely cold weather conditions (-18°C
or less / 0°F or less):
• Loss of power
• Hesitation on acceleration
• Stalling condition
• May also notice a Malfunction Indicator Lamp illuminated
• After driving for a period of time, the driveability issues seem to diminish.
This condition may also cause an increase in crankcase pressure, creating oil leaks at
seals and gaskets.
Technicians may find one or more of the following DTCs set:
• P0234
• P0236
• P0299
• P2227
• P00C7

Cause

This condition may be caused by ice accumulation in the charge air cooler (CAC) or
turbocharger wastegate regulator solenoid valve (TCV), causing improper boost
pressures.

Correction

Important: The DTCs and symptoms above are not exclusively related to freezing/icing
conditions. Only follow this bulletin when the condition is directly correlated with extreme
cold of -18°C or less / 0°F or less. System leaks should always be ruled out first for
P0299. Signs of moisture will always be present in the CAC system and are not a reliable
indicator of freezing/icing.
If any of the above conditions are present, allow time for possible ice build up in the CAC
to melt by allowing the vehicle to thaw in a warm environment.
Follow the Service Procedure below once the vehicle has had time to thaw.

Copyright 2023 General Motors LLC. All Rights Reserved.

Page 2

May, 2023

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: Allow time for the vehicle to thaw in a warm
environment to avoid damaging or breaking parts that
may be required to be re-installed.

Bulletin No.: 22-NA-007

Turbocharger Wastegate Regulator
Solenoid Valve (TCV) Thermo-Wrap

Service Procedure
Important: A new part number is available for the
Charge Air Cooler (CAC). Replace this part Only if the
CAC has never been replaced previously.
• If the CAC has been replaced, proceed to Step 1.
• If the CAC has not been previously replaced,
install the new CAC. Refer to Charge Air Cooler
Replacement in SI and proceed to step 2.

3686945

1. Remove the turbocharger wastegate regulator
solenoid valve (TCV) (1). Refer to Turbocharger
Wastegate Regulator Solenoid Valve Replacement
in SI.
2. Drain the TCV by turning the valve upside down.

4171562

1. Remove the CAC (2) and drain any moisture built
up. Refer to Charge Air Cooler Replacement in SI.
2. Perform an oil change. Refer to Engine Oil and Oil
Filter Replacement in SI.
Important: Do Not perform an oil change if the oil
change was recently done.
• If the oil change was recently done and no
signs of moisture have been confirmed,
proceed to Turbocharger Wastegate
Regulator Solenoid Valve (TCV)
Thermo-Wrap procedure.
• If the oil change was not previously done or
moisture has been found in the oil, proceed to
step 2 above.

6055068

3. Using clean shop air regulated to 80-100 PSI, blow
through all three ports (1, 2 & 3) for 5
seconds each.

Bulletin No.: 22-NA-007

May, 2023

Page 3

Note: Check port #2 to assure the spring gets lifted off
the seat. This will be determined by the compressed air
not dead heading when applied to port #2. When
applying air to this port a small amount of air should be
observed at port #3 and even less air will be noticed at
port #1. If this does not happen, the TCV plunger may
have hardened deposits from hot operating conditions
which will impede TCV plunger movement, and the
turbocharger wastegate regulator solenoid valve should
be replaced.
⇒ Repeat step 3 twice.

6046334

6. Once the mounting bolt and hoses are properly
installed, pull the lower portion of the wrap upward,
and snap it into position.
7. Clear all DTCs using GDS and evaluate.

6055077

4. Prior to reinstalling the TCV, pre-position the
thermal wrap. This will aid in installation of the
wrap once the TCV is reinstalled.

6046314

Note: The end result of the wrap will surround the TCV
as shown in the graphic above. Do not snap the wrap
until step 6.
5. Install the TCV. Refer to Turbocharger Wastegate
Regulator Solenoid Valve Replacement in SI.

Page 4

May, 2023

Bulletin No.: 22-NA-007

Turbocharger/Supercharger Boost
Pressure Sensor Inspection
Important: Only perform steps 1-5 if DTC P0299 or
P0234 is set.

4108751

1. Remove the turbocharger air pressure sensor (3).
Refer to Turbocharger/Supercharger Boost
Pressure Sensor Replacement in SI.

4910683

Important: Due to the sensitivity of the sensor, Do Not
use any chemical cleaners including water and Do Not
use compressed air to remove contaminates.
2. Inspect the sensor for any contaminates.

Bulletin No.: 22-NA-007

May, 2023
•

5020216

3. Allow time for any ice build-up to melt by placing
the sensor port down.
4. Clean the sensor with a clean towel.
5. Install the sensor. Refer to Turbocharger/
Supercharger Boost Pressure Sensor
Replacement in SI.

Engine Control Module Programming
for 2018–2022 Models
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.

Page 5

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