Putting three diesel builds head-to-head to see which one is actually the loudest. Using a decibel reader, we test a straight-piped diesel RV, a big turbo Duramax, and a 12V Cummins at idle and while ...

This 2026 GMC Sierra 2500 HD Denali Ultimate pickup is up for grabs thanks to a new sweepstakes, with GM Authority readers ...

The 2026 Chevy Silverado 1500 offers a few new paint color options, and now, GM Authority is now checking out one of those new hues, namely White Sands.

The Blazer M1009 is not designed to transport VIP guests in war zones, but rather to transport troops and their gear that are ...