There are six Silverado HD trims: WT (Work Truck), Custom, LT, LTZ, ZR2, and High Country, and two versions: 2500 HD and 3500 HD. The Custom grade is exclusive to the Silverado 2500 HD. Buyers have three cab options to choose from: regular (two doors), Double Cab (two standard front doors and two rear-access doors, and Crew Cab (four standard doors). There are also two cargo bed lengths: standard (82.25 inches) and long (98.27 inches). The 3500 HD can be purchased with single-wheel or dual-wheel rear axle arrangements. The possible configurations vary by trim and version.
The standard powerplant is a 6.6-liter gasoline V8 that makes 401 horsepower and 464 lb.-ft. of torque. The available Duramax 6.6-liter V8 Turbo-Diesel produces 470 horsepower and 975 lb.-ft. of torque. Rear-wheel drive is standard, while four-wheel drive is optional and included with the ZR2 and High Country trims. An Allison ten-speed automatic transmission manages all drivetrains.
The 2500 HD and 3500 HD can conventionally tow up to 20,000 pounds, while fifth-wheel/gooseneck hauling ability increases considerably with the Max Trailering Package added: a maximum of 22,430 pounds for the 2500 HD and 36,000 pounds for the 3500 HD. The payload limits max out at 3,615 pounds for the 2500 HD and 7,237 pounds for the 3500 HD. Capacities vary by cab style, bed length, engine, and equipment.
The Silverado HD WT has the essentials: single-zone manual air conditioning, a 40/20/40 split-bench front seat, vinyl upholstery, a standard locking tailgate, halogen headlights, a trailering package, vinyl flooring, and power windows and door locks. It also gets remote keyless entry, two first-row USB ports, a 3.5-inch monochromatic driver information display, black-finish exterior accents, and 17-inch steel wheels. The Custom adds more comfort and convenience features, including fabric upholstery, deep-tinted glass, power side trailering mirrors, carpet, rubberized floor mats, cruise control, body-color bumpers, and 20-inch aluminum wheels.
The LTZ increases the standard equipment roster with proximity keyless entry with push-button start, an EZ Lift tailgate with power lock and release, a 12.3-inch driver information display, a wrapped steering wheel, chrome bumpers, body-color exterior accents, and 17-inch aluminum wheels.
The LTZ trim takes the Silverado HD to the next level with leather upholstery, heated driver and front outboard passenger seats, a heated steering wheel, ten-way power driver’s and front passenger’s seats, a driver’s memory system, enhanced side mirrors with a power-folding/extending feature, dual-zone automatic climate control, LED exterior lighting, LED fog lamps, and remote start. There’s other standard equipment, like rain-sensing windshield wipers, an auto-dimming rearview mirror, rear wheelhouse liners, 120-volt power outlets, a manual tilt and telescopic steering column, a rear-window defogger, and an enhanced rear seat with under-seat storage, chrome exterior accents, dual second-row USB ports, and 18-inch aluminum wheels. The new Trail Boss package for the LT and LTZ trims (requires the 4WD Crew Cab configuration) includes the Z71 shocks and suspension upgrade, unique exterior treatments, exclusive 20-inch wheels with BF Goodrich K03 tires, and the Chevytec spray-on bedliner.
The ZR2 blends greater off-road capability with upscale features. It gets a high-performance lifted suspension, Multimatic DSSV dampers, a two-speed transfer case, a rear electronic locking differential, oil coolers for the engine and transmission, and skid plates. Luxury comes into play with perforated leather front seats (with ventilation, heat, and ten-way power controls), a driver’s position memory system, heated rear outboard seats, a heated steering wheel, a power-sliding rear window, LED exterior lighting, a spray-on bedliner, a power tailgate, and wireless device charging. The High Country gets many of the same premium features as the ZR2 but with less off-road specialization.
All 2025 Silverado HDs are set up with forward collision warning, automatic emergency braking with pedestrian detection, lane departure warning, and a following distance indicator. Blind-spot monitoring and rear cross-traffic alert are available on the WT through LTZ. The ZR2 and High Country get an upgraded blind-spot system that helps during trailering. The ZR2 and High Country also come with the Safety Alert Seat (vibrates during specific safety notifications) and front and rear parking sensors. A surround-view monitor is standard on the ZR2 and High Country and can be optioned for the LT and LTZ. Adaptive cruise control is standard with the High Country and available on lower trims.
While the WT and Custom have a 7-inch infotainment touchscreen, the higher grades get a 13.4-inch touchscreen with Google built-in features. Both systems have wireless Android Auto/Apple CarPlay and Bluetooth. SiriusXM satellite radio is optional for the WT and included on the higher trims. Most trims have a multi-speaker audio system that’s upgraded to a seven-speaker Bose sound system in the ZR2 and High Country. All trims have access to a Wi-Fi hotspot and OnStar/Chevrolet connected services.