2018 GMC Sierra 1500: Toy Hauler

– St. George, Utah

Loaded down with two Polaris RZR side-by-sides sitting on 24-foot-long trailer, I climbed behind the wheel of a 2018 GMC Sierra 1500 Denali planning to head 60 miles east from St. George, Utah towards Coral Pink Sand Dunes State Park, Kanab Utah. The plan was to trailer out the toys and play in the sand, but first a towing demonstration and education.

Prior to leaving, Lead Development Engineer for GM's full-size trucks, Chris Carino explained the towing capability of the pickup with either a 5.3-liter V8 or 6.2-liter V8 engine. According to GMC, 70 percent of Sierra owners tow regularly, taking advantage of a variety of towing-specific features like the standard trailer sway control, a tow/haul mode that adjusts transmission shift points and throttle input to account for the extra weight, auto-grade braking, the transmission temperature gauge, and the available trailer brake controller. These systems work to keep the pickup and trailer from getting out of control creating a dangerous driving situation.

Sierra Stories:


These features are in addition to common-sense towing precautions. Check your lights, cross the tow chains, check the hitch and tire pressures, and make sure your mirrors are adjusted. Beyond these actions, it’s worth knowing your truck. Towing is more than ...