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GM 6.2 Liter Engine, Defect Overview

Posted by Howard Gutman | Mar 20, 2026 | 0 Comments

Nature of Defect The GM's L87 V8 engines have a common defect regarding the bearings in their engines which are prone to, and have experienced failure, resulting in breaching of the engine block by the connecting rod and/or engine  seizure (the “Bearing Defect”). Oil Consumption Some owners ha...

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2023 Silverado & GMC Sierra Radio Updates: 23-NA-143 and Other Software Fixes

Posted by Howard Gutman | Jan 18, 2026 | 0 Comments

Owners of 2023 Chevy Silverado and 2023 GMC Sierra trucks are hearing a lot about radio "campaigns," programming, and Technical Service Bulletins (TSBs) such as 23-NA-143. Service advisers may say the software is "up to date," yet you still have glitches or sound cutting in and out. This blog post focuses on those software updates themselves: what they are, why GM released them, and how New York and New Jersey owners should document them...

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2020-2024 Chevy Silverado: Coolant Temperature Service Bulletins & Special Coverage

Posted by Howard Gutman | Dec 28, 2025 | 0 Comments

If you own a 2020–2024 Chevy Silverado 1500 with the 3.0L Duramax and keep hearing about Chevy Silverado coolant temperature service bulletins or a 15-year/150,000-mile program, you’re really asking one thing: “Does my truck qualify for the special coverage on the coolant control valve?” This page focuses on that coverage and the key bulletins...

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