A GMC Sierra 1500 owner is stunned that his diesel truck delivers a "shockingly good" 23.5 MPG on logging roads, even with ...

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 city driving fell to a shocking 9 MPG.

Discover the surprising Japanese roots of GM's popular Duramax diesel engine, a powerhouse for US pickup trucks since 2001.

Top 9 most reliable used diesel trucks under $20,000, ranked by reliability ratings—with key years, engines, and buying tips ...

The third truck with more range than the Tundra hybrid is the GMC Sierra Duramax diesel. It’s like the Silverado, only it’s more luxurious.

There are only three generations of the GMC Canyon, but over the last two decades, which one has proven most reliable?

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