NHTSA ID Number: 10249037
Manufacturer Communication Number: 22-NA-240
TSB/Document Date: 2024-01-19
Summary
This informational bulletin advises the tech to validate if oil is leaking into the cooling system and to test and verify were to leak is coming from before replacing all the parts that wouldn't apply to the repair.
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TSB/Document ID: 22-NA-240
Replacement Service Bulletin Number:
MFR Communication Date: 2024-01-11
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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Bulletin No.:
Service Bulletin
22-NA-240
Date:
January, 2024
INFORMATION
Subject:
Information on Overheating, Cooling System Contaminated with Engine Oil
This Service Bulletin replaces PIP5257E. Please discard all versions of PIP5257.
Brand:
Model:
Model Year:
VIN:
from
to
Engine:
from
to
Enclave
2010
2024
LFY, LLT
LaCrosse
2010
2019
LF1, LFW,
LFX, LGX
ATS
2013
2019
LF4,
LFX, LGX
CT4
2022
2024
LF4
CT5
2020
2024
LGY
CT6
2016
2020
LGW, LGX
CTS
2010
2019
LFW, LF3,
LFX, LGX
SRX
2010
2016
LFX, LFW
XT5
2017
2024
LGX
XT6
2020
2024
LGX
—
—
Blazer
2019
2024
Camaro
2010
2024
LFX, LGX
Caprice
2012
2017
LFX
LGX
Captiva
2011
2018
LFX, LFW
Colorado
2015
2022
LFX, LGZ
Equinox
2010
2017
LF1,
LFW, LFX
Impala
2012
2020
LFX
Traverse
2010
2024
LFY, LLT
Acadia
2010
2023
LGX, LLT
Canyon
2015
2022
LFX, LGZ
Terrain
2010
2017
LF1,
LFW, LFX
Copyright 2024 General Motors
LLC. All Rights Reserved.
—
Page 2
January, 2024
Bulletin No.: 22-NA-240
Involved Region or Country
North America, Brazil, Chile, Colombia, Ecuador, Paraguay, Uruguay, Venezuela,
Europe, Russia, Middle East, Iraq, Japan, Cadillac Korea (South Korea), China, Taiwan,
Singapore, Australia/New Zealand, Other Africa
Condition
Some customers may comment on one or more of the following conditions:
• Overheating
• Coolant overflowing from reservoir
• Oil contamination in coolant
Cause
This condition may be caused by engine oil mixing into the coolant from the main oil
gallery to a water jacket through block porosity or thin wall-casting or from the oil cooler
into the radiator.
⇒ The average oil pressure is over 414 kPa (60 psi) and the coolant pressure
is 110 kPa (16 psi).
If you encounter a vehicle with this concern, validation on where the oil contamination is
emitting from is required before replacing components:
⇒ If equipped, test the oil cooler system for possible leaking into the coolant
through the radiator.
Information
– If the oil cooler tests good or the vehicle is Not equipped with an oil cooler, then
reference this bulletin and replace the engine as well as all the rubber coolant hoses.
Flush the radiator and heater core if possible or replace hoses as needed.
Also if equipped, flush the rear heater core and replace hoses as needed.
Note: A soapy solution may aid in cleaning the cooling system of oil. A final flush with
fresh water will be required.
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.
Version
2
Modified
Released December 01, 2022
Revised January 11, 2024 – Added the 2024 Model Year to applicable vehicles, 2022–
2023 Model Years to Acadia and a Note to the Information 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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