Sierra HD pickups can take every adventure to the next level and make even your toughest jobs a little easier. These trucks deliver extreme performance and come with advanced tech features that set them apart from other heavy-duty options on the market. Just take a look at these four reasons drivers love the 2025 GMC Sierra HD to see why so many people choose these pickups!
1. 6.6L V8 Engine Options
The Sierra HD 2500 and 3500 have two engine options: a 6.6L V8 gas engine or a 6.6L Duramax Turbo-Diesel engine. The 6.6L V8 gas engine comes standard on both models, offering 401 horsepower at 5200 rpm and 464 lb.-ft. of torque at 4000 rpm.
To get the full range of performance out of your Sierra HD truck, you can upgrade to the available 6.6L Duramax Turbo-Diesel engine. This engine generates 470 horsepower at 2800 rpm and 975 lb.-ft. of torque at 1600 rpm. This engine maximizes your truck’s towing capabilities, offering a maximum capacity of 22,070 pounds on the 2500 and 36,000 pounds on the 3500.
2. 10-Speed Automatic Transmission
Every Sierra HD pickup comes with an electronically controlled 10-speed automatic transmission for smooth shifting. The transmission has Tow/Haul mode, which decreases shift cycling for improved control and enhanced cooling when you’re towing or hauling heavy loads. It also includes auto-grade braking to automatically downshift to enable engine braking and slow the truck on downhill grades.
3. GMC Infotainment System
The 2025 Sierra HD features a 7-inch GMC infotainment system, which comes with several convenient entertainment and connectivity features. With Apple CarPlay and Android Auto, you can connect your phone to the truck and use voice activation to make phone calls or send text messages while you drive. Bluetooth audio streaming allows you to stream music and other entertainment from your phone or another compatible device without using any wires.
4. Sierra HD Pro Safety
The GMC Sierra HD comes with its own exclusive driver-assistance package, Sierra HD Pro Safety. The Sierra HD Pro Safety package uses the following assistive functions to promote safer driving and alert you to common causes of accidents before one occurs:
- Lane Departure Warning
- Forward Collision Alert
- Front Pedestrian Braking
- Following Distance Indicator
- Buckle to Drive
- Automatic Emergency Braking
- IntelliBeam
The features in the Sierra HD Pro Safety package employ radar technology and digital cameras to watch your truck’s surroundings. If any of these functions detect a possible hazard or dangerous driving condition, you’re urged to take corrective action before the package activates your hard braking.
Head over to AutoNation Buick GMC Park Meadows in Lone Tree, CO, and hop inside a new Sierra HD today!
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