Service Bulletin

Bulletin No.:

18-NA-020

Date:

May, 2019

TECHNICAL
Subject:

Malfunction Indicator Lamp Illuminated with DTC P0300 and/or P0299/P2227 Set
This Bulletin replaces PIP5511A. Please discard PIP5511A.

Brand:

Model:

Buick

Envision

Chevrolet

Equinox

GMC

Terrain

Holden

Equinox

Model Year:
from

to

VIN:
from

to

Engine:

Transmission:

Equipped with
2.0L Engine
(RPO LTG)

2016
2019
2018

Equipped with
2.0L or 1.5L
Engine (RPOs
LTG, LYX)

All

Involved Region or Country

North America and N.A. Export Regions

Condition

Some customers may comment on a malfunction indicator lamp illuminated.
During diagnosis, a technician may find DTC P0299, P2227, or P0300 set/stored.

Cause

This condition may be caused by a moisture build up inside the charge air cooler. Long
drives through rainy conditions and/or high humidity conditions (heavy fog) can cause
moisture to collect in the charge air cooler.
A heavy acceleration can draw moisture into the engine causing DTC P0300. In cold
temperatures, ambient and PCV moisture can freeze in the charge air cooler, restricting
flow, and causing DTC P0299 and/or P2227.

Correction

Perform a smoke leak test of the charge air cooler, then follow the repair steps in the
appropriate Service Procedure below, depending on the build date and vehicle outside
temperature experience.
Note: Deadener material covering is only to be used in northern states or provinces
where temperatures are consistently 20°F/-7°C or less.

Copyright 2019 General Motors LLC. All Rights Reserved.

Page 2

May, 2019

Flow Chart Based on Conditions

5336724

Bulletin No.: 18-NA-020

Bulletin No.: 18-NA-020

May, 2019

Page 3

Service Procedure Equinox, Terrain
Important: For the 2.0L engine ONLY, remove the
boost sensor from the intake charge pipe to the throttle
body and wipe with a clean rag to remove residual
moisture.
1. Perform a smoke leak test of the charge air cooler.

4597334

• If a leak is determined, replace the charge air
cooler with the newly designed part. Refer to
Charge Air Cooler Replacement in SI.
• If there is NO leak, but a P0300, P0299 and/or
P2227 are present, AND the vehicle was built
ON or BEFORE March 1,2018, then replace
the charge air cooler with the newly designed
part. Refer to Charge Air Cooler Replacement
in SI.
• If there is NO leak, but a P0300, P0299 and/or
P2227 are present, AND the vehicle was built
AFTER March 1, 2018, refer to SI for further
diagnosis.
Important: If the charge air cooler is freezing, and the
temperature is NOT going below 20°F/-7°C, install grill
covers.
Important: Remove grill covers when the outside
temperature is consistently above 40°F/4°C.

Important: The grille cover MUST be removed before
towing a trailer of any size. Failure to do will decrease
the transmission cooling efficiency and possibly cause
damage to the drivetrain.
If the charge air cooler is icing in colder weather
conditions, even after using the grill covers, OR the
temperature is expected to be consistently below
20°F/-7°C, install 2 pieces of outer panel body
deadener P/N 25757810, over the top of the Charge Air
Cooler and secure them using zip ties to help prevent
icing, following the additional steps listed below.
Important: Grill covers cannot be used when the
Charge Air Cooler is covered with the deadener
material.

Page 4

May, 2019

Bulletin No.: 18-NA-020

Important: When the temperature consistently rises
above 40°F/4°C, the customer should come back to
have the covering removed.
1. Remove the front bumper shutter. Refer to Front
Bumper Shutter Replacement in SI.

5274387

5279924

2. On the back of the upper shutter using a saw
blade, cut the upper shutter to lower shutter
actuator at the pivot location, as shown in the
photo above, and remove the linkage (1) and
discard.
3. Remove and discard the front bumper secondary
(lower) shutter assembly. Refer to Front Bumper
Secondary Shutter Replacement in SI.
Note: The secondary (lower) shutter assembly will not
need to be reinstalled in the future.

5272783

4. Fold the ends on the outer panel body deadener
with the paper side facing the cooler and install zip
ties around the cooler to retain the deadener in the
3 location.
Important: There should be at least 1/2” (13mm) fold
on the top and bottom of the deadener.
Important: DO NOT REMOVE THE PAPER OR FOIL.
Important: DO NOT REINSTALL THE GRILL
COVERS WITH DEADENER INSTALLED.

Service Procedure Envision ONLY
Important: Remove the boost sensor from the intake
charge pipe to the throttle body and wipe with a clean
rag to remove residual moisture.
1. Perform a smoke leak test of the charge air cooler.

Bulletin No.: 18-NA-020

May, 2019

Page 5

4597334

Important: The newly designed charge air cooler is
wider and is NOT compatible with the existing lower
baffle on the vehicle. The baffle will need to be replaced
to accommodate the larger charge air cooler.
• If a leak is determined, replace the charge air
cooler with the newly designed part. Refer to
Charge Air Cooler Replacement in SI.
• If there is NO leak, but a P0300, P0299 and/or
P2227 are present, AND the vehicle was built
ON or BEFORE January 5, 2019, then replace
the charge air cooler with the newly designed
part. Refer to Charge Air Cooler Replacement
in SI.
• If there is NO leak, but a P0300, P0299 and/or
P2227 are present, AND the vehicle was built
AFTER January 5, 2019, refer to SI for further
diagnosis.

Parts Information
Important: For Equinox and Terrain ONLY: The
vehicles may not show an E48 RPO code, so use the
other RPO identifiers to select the correct cover.
Causal
Part

X

Description

Charge Air Cooler

Part
Number

RPO

84454110

LYX

84454111
84634949
(Envision)

LTG

Causal
Part

Description

COVER PKGFRT GRL OPG
NA*

BAFFLE, RAD
AIR LWR

Part
Number

RPO

84624274
(Equinox)

Without WBL
or WFP

84624275
(Equinox
with Redline/
Sport)

With WBL
or WFP

84630081
(Terrain
without front
license plate
bracket)

Without VK3

84648360
(Terrain with
front license
plate
bracket)

With VK3

23350091
(Envision
ONLY)

-

*For warranty transactions, DO NOT mark this/these
parts as the Causal Part. Enter the word “Bulletin” in the
Causal Part Description free-flow text field.

Page 6

May, 2019

Bulletin No.: 18-NA-020

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
2.3 hrs.
(Envision)
2.3 hrs.
(Equinox
RPO LTG)

4087008*

Perform Smoke Test for
Charge Air Cooler and
Charge Air Cooler
Replacement

2.4 hrs.
(Equinox
RPO LYX)
2.6 hrs.
(Terrain
RPO LTG)
2.4 hrs
(Terrain
RPO LYX)

1086018*

Perform Smoke Test and
Install Charge Air Cooler
Grille Cover

4086868*

Perform Smoke Test for
Charge Air Cooler and
Charge Air Cooler
Replacement

0.6 hrs.
(Equinox)
0.5 hrs.
(Terrain)
1.3 hrs.
(Equinox,
Terrain)

*This is a unique Labor Operation for Bulletin use only.

Version

8

Modified

Released January 22, 2018
Revised July 26, 2018 – Added Holden Equinox Model
Revised October 19, 2018 – Updated the Cause and Correction.
Revised December 21, 2018 – Updated Additional Options, Correction, Parts Information
and Warranty Information.
Revised January 09, 2019 – Updated the Parts Information
Revised February 19, 2019 – Added Envision also updated the Condition, Parts
Information and Warranty Information.
Revised March 19, 2019 – Updated the Service Procedure and Warranty Information for
Equinox/Terrain.
Revised May 15, 2019 – Updated the Warranty Information and adding flow chart.

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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