NHTSA ID Number: 10219393
Manufacturer Communication Number: 22-NA-067
TSB/Document Date: 2022-09-08
Summary
This service bulletin provides a repair procedure to correct customer concerns of Poor Engine Performance in Extremely Cold Weather Conditions, PCV Bypass Hose and Charge Air Cooler Icing for LUV Engines, Malfunction Indicator Lamp (MIL) Illuminated.
Bulletin No.:
Service Bulletin
Date:
22-NA-067
September, 2022
TECHNICAL
Subject:
Poor Engine Performance in Extremely Cold Weather Conditions, PCV Bypass Hose
and Charge Air Cooler Icing for LUV Engines, Malfunction Indicator Lamp (MIL)
Illuminated - DTC P0299, P0234, P0236, P2261, P2227, P00C7 Set
Brand:
Model:
Encore
Model Year:
VIN Breakpoint:
from
to
2013
2020
Cruze
2011
2016
Sonic
2012
2020
Trax
2013
2020
Opel
Ampera
2012
2015
Vauxhall
Ampera
2012
2015
from
to
—
1.4L
(RPO LUV)
—
Involved Region or Country
North America, Europe
Condition
Some customers may comment that when driving their vehicle, they may experience one
or several of the following conditions:
• Loss of power.
• Smoke out the tail pipe.
• Hesitation on acceleration.
• Stalling condition.
• Burning oil odor possibly caused by oil leak.
• After driving for a period of time, the driveability issues seem to diminish.
• Malfunction Indicator Lamp (MIL) Illuminated.
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:
• P0299
• P0234
• P0236
• P2227
• P2261
• P00C7
Cause
This condition may be caused by one or more of the following:
• Plugged crank case vent tube from ice forming in the tube during very cold weather
conditions.
• Ice accumulating in the intake manifold forming and blocking the PCV passage in the
cylinder head.
• Ice accumulation in the charge air cooler, restricting air flow to the throttle body.
• Contamination (ice /water/oil/sludge) at the charge air bypass valve.
Correction
If contamination (Ice/water /oil/sludge) at charge air bypass valve is found:
• Clean the charge air bypass valve.
• Replace the intake manifold.
• Replace the charge air bypass valve only if necessary.
Copyright 2022 General Motors
LLC. All Rights Reserved.
Page 2
September, 2022
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.
Turbocharger, Intake Manifold and
Cylinder Head Inspection
Bulletin No.: 22-NA-067
• If there is oil/water build-up in the valve port,
disassemble and clean the components. Refer
to Charge Air Bypass Valve Replacement in SI.
• Only if necessary, replace the components.
⇒ Desired boost pressure vs actual boost
pressure not within limits and no trouble found
on waste gate actuator or No excessive play/no
damage from turbocharger - Then Do Not
replace turbocharger. Clean charge air bypass
valve and replace the intake manifold.
2. Remove the intake manifold. Refer to Intake
Manifold Replacement in SI.
5590615
1. Inspect the charge air bypass valve for ice/oil/
water/sludge build-up in the vacuum side port.
5286434
3. Inspect the vacuum ports of the intake manifold for
ice/water/oil accumulation.
5590616
Bulletin No.: 22-NA-067
September, 2022
Page 3
5286457
4. Inspect the PCV intake runner for ice build-up
blocking the cylinder head as shown above.
Intake Manifold Redesign Inspection
and Familiarization
New intake manifold with a re-designed intake positive
pressure port location. Solenoid location is electrical
connector forward. The vacuum feed is in the same
location. If the solenoid is found to be loose, review the
location of the electrical connector. If the connector is
facing the head of the assembly, it is installed
backwards and will need to be removed and installed
correctly.
5286568
5. Clean any ice/sludge/water/carbon out of the
cylinder head, cam cover and PCV pipes.
If above condition exists, then replace the intake
manifold. Refer to Intake Manifold Replacement in SI.
6145032
Old Design Intake Manifold
• Bypass Valve Vacuum (1)
• Intake Positive Pressure Port (2)
• Solenoid/Electrical Connector (3)
Page 4
September, 2022
Bulletin No.: 22-NA-067
Note: The electrical receptacle location. Remove and
re-install the lines and solenoid as they are retained to
the intake if installed incorrectly. Tabs reversed, the
solenoid is keyed and will not be seated in retainers.
6145030
New Design Intake with solenoid retainers not seated
and the electrical connector facing the cylinder head.
Keyed section of intake not level with solenoid body.
6145033
New Design Intake Manifold
• Bypass Valve Vacuum (1)
• Intake Positive Pressure Port (2)
• Solenoid/Electrical Connector (3)
6145028
New Design Intake with incorrect solenoid installation.
Parts Information
Causal
Part
Description
Part
Number
Qty
N/A
MANIFOLD, INT
28289977
1
N/A
VLV, CHRG AIR
BYPASS
55590593
1
Bulletin No.: 22-NA-067
September, 2022
Page 5
Warranty Information
Note: Only select the Labor Operation that
corresponds with the repair performed.
For vehicles repaired under the Powertrain coverage,
use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information.
Note: Warranty Coverage Code E applies to Labor
Operation 4088558.
Labor Operation
Description
Vehicle
Labor Time
4088558*
Inspection and Cleaning
All
0.3 hr
Add
Encore
1.0 hr
Add
Cruze
1.4 hrs
Sonic
1.5 hrs
Add
Intake Manifold Inspection,
Cleaning and Replacement
Add
Trax
1.0 hr
Add
Ampera
0.8 hr
All
1.3 hrs
Add
Charge Air Bypass Valve
Cleaning or Replacement
*This is a unique Labor Operation for bulletin use only.
Version
2
Modified
Released August 08, 2022
Revised August 31, 2022 – Updated the first statement in Condition section, added
Intake Manifold Redesign Inspection and Familiarization section and removed ELR and
Volt vehicles from Warranty Information.
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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CERTIFICATION
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TSB/Document ID: 22-NA-067
Replacement Service Bulletin Number:
MFR Communication Date: 2022-08-31
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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