NHTSA ID Number: 10160108
Manufacturer Communication Number: 17NA221
TSB/Document Date: 2019-05-20
Summary
This technical bulletin provides a procedure to replace the CAC if it freezes in cold weather conditions causing engine power concerns.
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TSB/Document ID: 17NA221
Replacement Service Bulletin Number:
MFR Communication Date: 2019-04-09
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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Service Bulletin
Bulletin No.:
17-NA-221
Date:
April, 2019
TECHNICAL
Subject:
Poor Engine Performance in Extremely Cold Weather Conditions for LE2 Engines,
Charge Air Cooler Icing - Malfunction Indicator Lamp (MIL) Illuminated, DTC P0299,
P0236, P2227, P00C7 Set
Brand:
Model:
Encore
Model Year:
VIN:
from
to
from
to
2016
2019
SOP
September
18, 2017
Engine:
Equipped with
1.4L (RPO 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
• Smoke out the tail pipe
• Hesitation on acceleration
• Stalling condition
• Burning oil odor possibly caused by oil leak
• 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.
The technician may find one or more of the following DTCs set:
• P0299
• P0236
• P2227
• P00C7
Cause
This condition may be caused by ice accumulation in the charge air cooler (CAC),
restricting air flow to the throttle body.
Correction
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 climate.
If any of the following conditions are validated to be caused by freezing/icing, replace
the CAC.
If not previously performed, an oil change may be necessary to remove any moisture
from the engine. Prior to the oil change, run the engine at idle for an extended period of
time to melt any ice in the engine.
Copyright 2019 General Motors
LLC. All Rights Reserved.
Page 2
April, 2019
Bulletin No.: 17-NA-221
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.
Grille Winter Cover Installation
Warning: Remove grille cover during temperatures
above 32°F/ 0°C to prevent engine and transmission
overheating. Remove grille cover before towing a
trailer of any size. Failure to do so will decrease
transmission cooling efficiency and possibly cause
damage to the drivetrain.
Note: The cover may appear to be undersized. The
vinyl used may stretch during installation to ensure a
tight fit. It is highly recommended that the cover be
installed in a warm shop environment.
5193266
2. Attach the cover to the fascia by pushing the hooks
through the grille openings.
3. Validate that all the hooks are engaged and the
cover is a tight fit.
5197596
1. Using care, orientate the fascia winter cover to the
bumper fascia.
Bulletin No.: 17-NA-221
April, 2019
Page 3
Turbocharger Air Pressure Sensor
Inspection
Important: Only perform steps 1–6 if DTC P0299
is set.
4108751
1. Remove the turbocharger Air Pressure sensor (3).
Refer to Turbocharger Air Pressure Sensor
Replacement in SI.
Page 4
April, 2019
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.
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.
Bulletin No.: 17-NA-221
Bulletin No.: 17-NA-221
April, 2019
Page 5
Service Procedure
2851444
1. Install the CAC (2). Refer to Charge Air Cooler
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, Do
Not proceed with procedure.
• If the oil change was not previously done or
moisture has been found in the oil, proceed
with procedure.
2. If required, perform an oil change. Refer to Engine
Oil and Oil Filter Replacement in SI.
Parts Information
Description
Model Year
Part
Number
Qty
Cooler,
Charge Air
2016-2019
42574036
1
2016
42697326
1
2017-2019
42697332
1
Cover, Grille
Winter
Filter, Oil
Oil
2016-2019
Refer to the Electronic Parts
Catalog (EPC).
Page 6
April, 2019
Bulletin No.: 17-NA-221
Warranty Information
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.
Labor
Operation
Description
Labor Time
4081728*
Charge Air Cooler
Replacement
1.1 hrs
Add
IAPT Inspection
0.2 hr
0580398*
Winter Grille Cover
Installation
0.2 hr
Add
Oil Change
0.3 hr
*This is a unique Labor Operation for Bulletin use only.
Version
5
Modified
August 14, 2017 – Added engine RPO to Subject.
April 12, 2018 – Updated to 2018 model year and added breakpoint and IAPT
information.
February 01, 2019 – Added the 2019 Model Year, an Important statement at beginning of
bulletin, Grille Winter Cover Installation procedure and parts information, changed Intake
Air Pressure and Temperature Sensor Inspection title to Turbocharger Air Pressure
Sensor Inspection and updated Warranty Information.
April 09, 2019 – Added 2019 to the Model Years for the charge air cooler in the Parts
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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