030310007K

Bulletin No.:
Service Bulletin
Date:
03-03-10-007K
November, 2021
INFORMATION
Subject:
Information on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of
GM Original Equipment Tires
Models:
2022 and Prior GM Passenger Cars and Light Duty Trucks
Attention: This bulletin also applies to any of the models that may be Export from North America
vehicles.
This bulletin has been revised to add the 2018-2022 Model Years. Please discard Corporate
Bulletin Number 03-03-10-007J.
The purpose of this bulletin is to help explain that,
under certain circumstances, a customer may notice a
slight tire shake within the first few miles/kilometers of
vehicle operation.
Tires may be designed with a nylon overlay
configuration engineered to enhance the tire's integrity
at high speeds. This allows the tires to be driven at
higher speeds without excessive heat buildup.
Important: Before measuring tires on GM approved
tire force variation measurement equipment, the vehicle
MUST be driven a minimum of 24 km (15 mi) to ensure
removal of any flat spotting (The tendency to “flat spot”
is less likely as the tire accumulates mileage).
When parked overnight, or for a period of time, the tires
may set (flat spot) and require a few miles/kilometers
before heating up to their normal operating
temperature. Until the tires warm up, a slight tire shake
may be felt but should subside quickly.
Important: DEALERS SHOULD REFRAIN FROM
ATTEMPTING REPAIRS OR REPLACING
COMPONENTS for this temporary tire flat spotting
condition.
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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