Quality issues related to the 3.0L I6 LZ0 turbodiesel Duramax are drawing more and more attention online, and in response, GM has issued a new Service Bulletin.

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A custom lifted 2026 GMC Sierra 2500 HD AT4 with Duramax power and $60K in upgrades pushes pricing near $150K. Would you pay ...

Over 20 years ago GMC noticed a market developing for luxury pickup trucks. There was a subset of buyers that needed a truck’s capability, but still wanted the posh suppleness of a luxury sedan. The ...

This has become a season for heavy-duty trucks, with GMC revealing its upcoming 2024 Sierra HD, right on the heels of the unveils for the related Chevrolet Silverado HD and updated Ford Super Duty.

Two brand-new 2025 trucks battle for the win. Which one is a better choice: the half-ton GMC Sierra or the heavy-duty Chevrolet Silverado? A fuel-efficient 3.0-liter Duramax or a 6.6-liter Duramax V8?

After being featured in the June 2015 issue ofDiesel Power, Bill Whitters' blacked-out GMC dualie is making its second appearance in these pages. Bill's truck is a family affair; following the ...