Bulletin No.: 17-NA-157

Service Bulletin

Date: July, 2024

INFORMATION
Subject:

Brand:

Information on Spin-On Oil Filter Replacement for Gas Engines Designed
with New Oil Pump Control Systems

Model:

Model Year:
from

VIN:
to

from

Cadillac
GM Passenger Cars and
Trucks

GMC

2012

2025

—

Transmission:

L3A, L82, L83,
L84, L86, L87,
L8B, L8T, L96,
LC8, LCV, LE2,
LEA, LF3, LF4,
LFR, LFV, LFW,
LFX, LFY, LGW,
LGX, LHN.
LKW, LLT, LT1,
LT4, LTG, LTA,
LV1, LV3, LV7,
LYX

—

to

Buick
Chevrolet

Engine:

—

Involved Region or Country

North America, Bolivia, Chile, Colombia, Ecuador, Paraguay, Peru, Uruguay, Europe,
Uzbekistan, Russia, Middle East, Israel, Palestine, Japan, Cadillac Korea (South Korea),
GM Korea Company, Australia/New Zealand

Information

Today's engine has very tight tolerances, two stage oil pumps and high flow lubrication
system requirements. The proper match of oil filter to engine application is more important than it has ever been in the past. The use of a replacement oil filter with an internal
bypass valve opening pressure specifications of 15 PSI (100 kPa) or less, allows debris
to circulate in the engine causing damage to bearings and other tight tolerances areas,
which may result in premature engine failure.
The oil pressure was increased to accommodate these tighter tolerances. As a result, the
oil filter specifications of the production oil filter and the service oil filter were also
improved to meet the new engine requirements.
Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of
pump out pressure. This means that the oil pump now does not begin to regulate until
pressure is built up to the main gallery. This change reduces the amount of time it takes
to provide oil to the engine bearing and lifters during extreme cold start conditions.
Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE),
High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with
the main gallery feedback oil pump control systems are factory built with ACDelco® oil
filters.
Important: The PF64 and PF63 can be commonly confused by many in the automobile
service industry with the ACDelco® PF48 and/or PF48E, because both oil filters have a
similar appearance and are very close in oil can size. However, these oil filters have different internal bypass valve opening pressure specifications (PF48/PF48E = 15 PSI
(100 kPa), PF64/PF63 = 22 PSI (150 kPa).
Note: Any aftermarket filter must also have an internal bypass valve opening pressure
specification, element integrity, filtration performance, media particle trap specification
and burst strength that is equivalent to the ACDelco PF64/PF63 filters.

Copyright 2024 General Motors. All Rights Reserved.

Page 2

July, 2024

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.

Bulletin No.: 17-NA-157

Parts Information
Refer to the Electronic Parts Catalog (EPC) to
determine the proper part numbers for the replacement
oil filter with an internal bypass valve opening pressure
specifications of 150 kPa and features that are equivalent to the ACDelco PF64/PF63 oil filters.

Version

5

Modified

July 13, 2018 – Added Model Years 2018-2019, added additional engine RPOs and
revised Important statement.
Revised February 10, 2022 – Added the 2020-2022 Model Years, removed references to
PF63E and updated the Involved Region or Country section.
Revised September 08, 2023 – Added the 2023-2024 Model Years and RPO L8T to
Engine section.
Revised July 17, 2024 – Added the 2025 Model Year and RPOs L82, L84, L87, LFW,
LFY, and LTA to Engine section, and clarified the Important statement in 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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