2024 GMC Sierra HD - Interior and Exterior Walkaround.
2024 GMC Sierra HD - Interior.
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2024 GMC Sierra HD Denali Ultamate, 3500 Dully, and AT4 Revealed
GMC Sierra HD pickups can pull a titanic amount of weight, but their Herculean efforts don’t stop there. These big-power workhorses clean up pretty well, too, offering shiny chrome exterior bits and a comfortable leather saddle for the inside. The Sierra 2500HD and 3500HD are the jumbo-shrimp of their half-ton counterpart, the Sierra 1500, reviewed separately. These GMC pickups offer a higher level of luxury and finish versus Chevy’s Silverado HD offerings. A 401-hp 6.6-liter V-8 with a 10-speed automatic serves as the base powertrain, while an available 445-hp Duramax turbodiesel V-8 with 10-speed automatic transmission is a prerequisite for the Sierra HD’s 22,500 pounds of maximum conventional towing. Additional trailer assist features such as Transparent Trailer View, Trailer Side Blind Zone Alert, and available adaptive cruise control with trailering make the Sierra HD work smarter instead of harder. While the heavy-duty Sierra lacks the polish and max towing of competitors such as the Ram HD and Ford Super Duty, it’s a solid choice for those with a gaping truck-size hole in their heart.
What's New for 2024?
GMC’s burliest pickup gets a light visual refreshing among larger changes such as a revised powertrain that offers more towing capacity and an all-new trim. The Sierra HDs get a revised front fascia with newly available LED headlights and taillights with sequential turn signals. The 6.6-liter Duramax turbocharged diesel V-8’s power and torque have increased to 470 horsepower and 975 pound-feet of torque respectively. The increased power has increased the towing capacity across the Sierra 2500HD and 3500HD lineup, with a higher max rating of 22,500 pounds at the hitch. The 401-hp 6.6-liter V-8 gas engine’s six-speed automatic is replaced by the Allison-certified 10-speed automatic, previously exclusive for the diesel engine. An all-new Denali Ultimate trim joins 2500HD and 3500HD and offers an even greater level of luxury than the popular Denali tier. Denali Ultimate, just as it does for Sierra 1500, adds leather-wrapped door panels, steering wheel, and A- and B-pillar handles. The 16-way power-adjustable front heated and cooled messaging front seats are also given intricate leather stitching with a topographic map of Mount Denali in Alaska. These revisions are supplemented by new trailering technology, including adaptive cruise control with trailering, gross combination weight (GCW) alert, and GM’s Transparent Trailer View is now also compatible for gooseneck and fifth wheel trailering. The Sierra HD’s standard driver assistance tech has also been expanded for 2024.
Pricing and Which One to Buy
Pro - $45,000 (est)
SLE - $50,000 (est)
SLT - $60,000 (est)
AT4 - $68,000 (est)
AT4X - $72,000 (est)
Denali - $74,000 (est)
Denali Ultimate - $80,000 (est)
We'd start with the crew cab and choose the standard bed on the Sierra 2500HD. We'd steer clear of the rugged AT4 and chrome-laden Denali models despite their enhanced appearance. Instead, we'd recommend picking the SLT trim level and adding four-wheel drive and the diesel V-8. The SLT comes standard with GMC's versatile MultiPro tailgate, a heated steering wheel, heated front seats, power-adjustable front seats, and remote start. It also unlocks more options than the lesser SLE trim. We'd pick the SLT Convenience package that includes front bucket seats with ventilated cushions, heated rear seats, and a power-sliding rear window. The Driver Alert packages are also worth adding because they make the behemoth easier to live with thanks to assists such as blind-spot monitoring, lane-departure warning, and front and rear parking sensors.
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