If Chevrolet’s Silverado is truly like a rock, the upper trims of GMC’s Sierra line are semi-precious gemstones, continuously growing in hardness and value. We’ve sampled Chevy’s new-for-2019 half-ton already, but last week was GMC’s chance to turn its glitzy 2019s loose — while keeping the lesser trims’ intriguing 2.7-liter four-cylinder, as well as the late-availability 3.0-liter diesel inline-six, out of reach of journalists’ paws.

Yes, the range-topping Denali earned top billing during this Newfoundland jaunt, but General Motors’ truck division seems to be growing into its self-declared status of premium truck provider. There’s a new flavor of Sierra 1500 for 2019, and it’s neither spartan nor cheap: AT4 — the off-roader for people who like nice things. (Read More…)