PI0754F
Service Bulletin Details
Public Details for: PI0754F
This pi provides information on rear and side tempered glass spots (quench marks) and that they are a normal characteristic.
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Models from 2023
Models from 2022
Models from 2021
Models from 2020
Models from 2019
Models from 2018
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Bulletin No.: PI0754F Date: Feb-2023 Subject: Rear and Side Tempered Glass Spots (Quench Marks) Models: 2023 and Prior GM Passenger Cars and Trucks Attention: This PI also applies to any of the above models that may be Export from North America vehicles. This PI has been revised to add the 2023 Model Year. Please discard PI0754E. Condition/Concern Shown in the pictures above are examples from the Cadillac CT4 and CT5 models, which are different from the typical "cheetah" spots. 1 Some customers may comment on spots showing on the rear and side windows when the vehicle is in the sunlight. When wearing polarized glasses/sunglasses, these spots may be more magnified. The spots are due to the manufacturing process and are “quench marks” in the glass. Quench marks are an unintentional side effect of the tempering process. Recommendation/Instructions Technicians should explain to the customer that this is a normal condition and part of the manufacturing process for tempered glass. Do not replace the window(s) for this condition. Note: These spots will not be seen on front windshields. 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. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION 2