2027 Silverado HD and Sierra HD Get a Huge Brake Overhaul

2027 Silverado HD and Sierra HD Get a Huge Brake Overhaul

Towing anywhere near the top of a heavy-duty pickup's rating puts more stress on the brakes than most people ever think about. Stopping 30,000-plus pounds of truck and trailer over and over on a mountain grade cooks rotors and pads in ways a half-ton never has to deal with, and GM is rebuilding the stopping power on its 2027 Silverado HD and Sierra HD specifically to handle that punishment.

The changes surpass just bigger rotors, too – GM is walking away from a braking architecture that's been standard in this segment for decades.

Both trucks move up to 14.6-inch front brake rotors matched with new fixed four-piston calipers, a jump in hardware that's aimed squarely at thermal capacity. Rear brakes get upgraded as well, though GM hasn't said exactly what changed back there. The point of all of it is to give the system more mass and surface area to absorb heat so it doesn't fade when a driver is riding the brakes down a long descent with a trailer hanging off the back.

GM Finally Splits Braking From Steering

Every current heavy-duty pickup on sale, Silverado HD and Sierra HD included, leans on a Hydro-Boost setup that shares ...