20NA128

Service Bulletin Details

Public Details for: 20NA128

This technical bulletin provides a procedure to replace the fuel filter drain or assembly if found the cause of the customers complaint.


- 2020 - 2019 - 2018 - 2017 -

Bulletin No.:
Service Bulletin
Date:
20-NA-128
August, 2020
TECHNICAL
Subject:
Brand:
Fuel Leak Under Vehicle, Fuel Odor
Model:
Model Year:
from
to
VIN:
from
to
Express
Malibu
GMC
Transmission:
LH7,
LVL, LWW
Equinox
Chevrolet
Engine:
LWN
2017
2020
-
-
LVL
Savana
LWN
Terrain
LH7
-
Involved Region or Country
North America, Europe, GM Korea (Exclude 2019 Malibu from GM Korea)
Condition
Some customers may comment on one or more of the following conditions:
• Fuel leak under the vehicle
• Fuel odor
Note: There may also be fuel present on component adjacent to the Fuel Filter, Fuel/
Water Separator.
Cause 1
This condition may be caused by Fuel leaking at the Fuel/Water Separator Drain Plug
Seal as shown in the photo.
Cause 2
This condition may be caused by a fuel leak along the Fuel/Water Separator Body.
Correction 1
5617297
If the source of the Fuel Leak is from the drain plug/seal, replace the drain plug and seal.
⇒ Tighten the fuel filter drain plug to 1.6 N m (14 lb in).
Correction 2
Copyright 2020 General Motors LLC. All Rights Reserved.
If the source of the fuel leak is along the Fuel Separator Body, please replace the Fuel
Filter/Water Separator Assembly. Refer to Fuel Filter Assembly Replacement in SI.
Page 2
August, 2020
Bulletin No.: 20-NA-128
Parts Information
Causal
Part
Description
Part
Number
Qty
X
PLUG, FUEL
FLTR DRN
84428488
1
X
FILTER, FUEL
(W/ WAT SEP)
84428489
1
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
4026770
Fuel Filter Replacement
4026790
Fuel Filter Assembly Replacement
Use the Published Labor
Operations Time
Version
1
Modified
Released July 27, 2020
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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