Chevrolet Equinox Service Manual: #03-03-10-007H: Information on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of GM Original Equipment Tires - (Oct 18, 2013) Tires
| Subject: | Information on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting)of GM Original Equipment Tires |
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| Models: | 2014 and Prior GM Cars and Light Duty Trucks | |
This bulletin has been revised to add the 2014 model year. Please discard CorporateBulletin Number 03-03-10-007G.
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 ofvehicle operation.
Tires may be designed with a nylon overlay configuration engineered to enhance thetire's integrity at high speeds. This allows the tires to be driven at higher speedswithout 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 flatspotting (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) andrequire 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 temporarytire flat spotting condition.
GM bulletins are intended for use by professional technicians,NOT a "do-it-yourselfer". They are written to inform thesetechnicians of conditions that may occur on some vehicles, or toprovide information that could assist in the proper service of avehicle. Properly trained technicians have the equipment,tools, safety instructions, and know-how to do a job properly andsafely. If a condition is described, DO NOT assume that thebulletin applies to your vehicle, or that your vehicle will havethat condition. See your GM dealer for information on whetheryour vehicle may benefit from the information. |
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