Long after luxury brands quit the format, GMC quietly built a massive V-12 for trucks and heavy-duty work. Here’s how it happened.
When you discuss maximizing an engine’s volumetric efficiency you are: –Boring everybody else at the party (as usual); –Explaining to your spouse why it’s crucial that you drop a couple grand on a ...
In 2025, Consumer Reports reported how General Motors (GM) issued a safety recall affecting nearly 600,000 full-size trucks and SUVs equipped with its 6.2-liter L87 V8 engine. The investigation into ...
General Motors is investigating an engine stall issue affecting several of its three-row crossovers, including the Chevy Traverse, GMC Acadia, and Buick Enclave. GM outlined the issue in a new ...
The owner of this 2024 GMC 1500 Sierra Denali had had enough of stock, so he drove his truck to a tuner and left it there. This is what he got back ...
As regular readers are no doubt aware, GM Authority has closely followed every development surrounding the 6.2L V8 L87 engine recall, and now, we’re turning our focus over to owners whose engines were ...
Too many conversations about General Motors performance begin and end with the small-block V8. Across all of its generations, the small block’s ubiquity and ability to make serious power reliably has ...
Daud Gonzalez is a lifelong car enthusiast and automotive writer with a specialty in modified and race-ready rides. He spends most of his time modifying his cars and ruining them in the process. He is ...
Joel was previously an editor at Autoblog for nearly a decade, covering cars from humble economy hatchbacks to high-end sports cars. He has extensive driving experience with plenty of track time, and ...
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