16-NA-172

Service Bulletin
Bulletin No.:
16-NA-172
Date:
April, 2022
INFORMATION
Subject:
Information on Removal of Wheel Washers Prior to Installation of Outer Dual Rear
Wheel
Brand:
Model:
Chevrolet
GMC
Model Year:
Engine:
Transmission:
2022
All
All
2022
All
All
from
to
Express
2016
Savana
2016
VIN:
from
to
Involved Region or Country
North America, Middle East and Israel
Additional Options (RPO)
Equipped with Rear Dual Wheel Configuration (RPO R05)
Wheel Washer Information
4520745
4520743
During transportation preparation, the outer dual rear
wheels are removed and 3 washers are installed on
each wheel stud for proper lug nut torque. This ensures
the nut threads are not damaged by bottoming out on
the wheel bolt.
Copyright 2022 General Motors LLC. All Rights Reserved.
Page 2
April, 2022
Bulletin No.: 16-NA-172
4520746
Prior to reinstallation of the outer dual rear wheels,
ensure that the washers are removed and inspect
wheel bolts and lug nut threads for damage.
Important: When the vehicle is new, or whenever a
wheel, wheel bolt or wheel nut is replaced, check the
wheel nut torque after 160, 1,600, and 10,000 km (100,
1,000, and 6,000 mi) of driving. For proper wheel nut
tightening information see “Wheel Nut Torque” under
Specifications. This information can also be found in
the Owner’s Manual under “Vehicle Care/Wheels and
Tires/Dual Tire Rotation.”
Version
4
Modified
Released August 29, 2016 – Added the 2017 Model Year and Important statement.
Revised January 19, 2018 — Updated Model Years.
Revised April 19, 2022 — Updated Model Years to include 2019 to 2022.
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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