New 2025 GMC Sierra 3500HD SLT

Vehicle Features

• Interior

  • Seat adjuster, driver 10-way power including lumbar
  • Seat adjuster, passenger 10-way power including lumbar
  • Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width underseat storage, (includes child seat top tether anchor)
  • Driver memory, recalls driver "presets" for power driver seat and outside mirrors
  • Floor covering, color-keyed carpeting
  • Steering wheel, wrapped
  • Steering wheel, heated
  • Steering column, manual Tilt-Wheel and telescoping
  • Steering wheel audio controls
  • Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
  • GMC Premium information Display- 13.4" diagonal Multicolor touch screen
  • Exterior Temperature Display located in radio display
  • Compass, located in instrument cluster
  • Window, power front, drivers express up/down
  • Remote vehicle starter system
  • Theft-deterrent system, unauthorized entry
  • Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
  • USB ports, (2) charge-only, rear
  • Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
  • Air conditioning, dual-zone automatic climate control
  • Air vents, rear
  • Mirror, inside rearview auto-dimming
  • Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted

• Exterior

  • Single Rear Wheels
  • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
  • Bumper, front chrome lower
  • Bumper, rear chrome with bumper CornerSteps
  • CornerStep, rear bumper
  • Bed Step, Black integrated on forward portion of bed on driver and passenger side
  • Moldings, beltline, stainless steel
  • Wheelhouse liners, rear (Not available with dual rear wheel models.)
  • Cargo tie downs (12), fixed, rated at 500 lbs per corner
  • Grille, Chrome surround with chrome insert bars
  • Fog lamps, LED
  • Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
  • Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
  • LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
  • Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger) lower convex mirrors, turn signal indicators, puddle lamps, perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm])
  • Mirror caps, chrome
  • Wipers, front rain-sensing
  • Glass, deep-tinted
  • Door handles, chrome
  • Tailgate, GMC MultiPro Tailgate with six functional load/access features. NOTE: Auto release can be disabled if ball hitch is installed. See Owners manual for details
  • Tailgate and bed rail protection caps, top
  • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light

• Mechanical

  • Engine, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm)
  • Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
  • GVWR, 11,700 lbs. (5307 kg) with single rear wheels (Included and only available with model TK30943 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
  • Air filter, heavy-duty
  • Air filtration monitoring
  • Transfer case, two-speed active electronic Autotrac with push button control (Requires 4WD models.)
  • Auto-locking rear differential
  • Four wheel drive
  • Cooling, external engine oil cooler
  • Cooling, auxiliary external transmission oil cooler
  • Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)
  • Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
  • Trailer brake controller, integrated
  • Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
  • Suspension Package (Not available with (X31) Off-Road Package.)
  • Steering, Digital Variable Steering Assist This system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
  • Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
  • Brake lining wear indicator
  • Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)

• Safety

  • StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
  • Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owners Manual for more information.)
  • Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
  • Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Rear Seat Reminder
  • Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
  • Seat Belt Adjustable Guide Loops, front row only
  • Indicator-Seat Belt WARNING, Rear Seat (Requires Crew Cab or Double Cab model.)
  • Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety)

• Entertainment

  • Audio system feature, 6-speaker system
  • Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)