A 2025 GMC Sierra 3500 AT4 owner is reeling after his brand-new diesel dropped from 24 MPG highway to a measly 17 MPG, and ...
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The Cummins Turbodiesel Inline-Six Is So Reliable It's Still In Production After 30 Years
According to sources such as Ohio Diesel, the current 6.7-liter Cummins inline-six is the most reliable diesel engine used in ...
Owners of older General Motors HD trucks may qualify for payouts between $400 and $12,000. The class-action lawsuit claims heavy-duty Chevrolet Silverado and GMC Sierra trucks with the 6.6-liter ...
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