2025 GMC Sierra 3500 HD AT4 at Theetge Chevrolet Buick GMC

Optional

• Technology Package
• AT4 Preferred Package
• AT4 Premium Plus Package

Standard

• Tire pressure monitoring system
• Teen Driver
• Tire, spare LT275/70R18 all-terrain, blackwall
• 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
• Seat Belt Adjustable Guide Loops, front row only
• Door locks, power

Optional

• Rear Cross Traffic Alert
• Lane Departure Warning
• Automatic Emergency Braking
• Forward Collision Alert
• Safety Alert Seat
• Following Distance Indicator
• IntelliBeam, automatic high beam on/off
• Theft-deterrent system, unauthorized entry
• Front and Rear Park Assist, ultrasonic

Standard

• Tire carrier lock
• Door handles, body-colour
• Mouldings, beltline, Black
• Daytime Running Lamps, LED signature lighting
• CornerStep, rear bumper
• Hitch Guidance
• Mirror, inside rearview auto-dimming
• Bed Step, Black, integrated on forward portion of bed on driver and passenger side
• Bumper, front, body-colour lower
• Bumper, rear body-colour with bumper CornerSteps
• Fog lamps, LED
• Taillamps, LED signature taillight, with LED stop and reverse light
• Mirrors, outside power-adjustable vertical trailering with heated and autodimming 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, high gloss Black
• Pickup bed, includes bed assist step
• Tailgate, GMC MultiPro Tailgate, with six functional load/access features
• Tailgate, gate function manual with EZ Lift, includes power lock and release, includes hitch area light
• Tailgate and bed rail protection caps, top
• Trailering Package, includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
• Trailering Information Label, provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
• Headlamps, Animated LED projectors, LED turn signals and Daytime Running Lamps
• Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
• Wheels, 20" (50.8 cm) High Gloss black aluminum wheels, 8 spokes
• Tires, LT275/65R20 all-terrain, blackwall

Optional

• Grille
• Capless fuel fill
• Glass, deep-tinted
• Defogger, rear-window electric
• Bed Liner, Spray-on, Pickup bedliner with GMC logo
• Lamps, Smoked Amber roof marker, (LED)
• Winter Grille Cover
• Hitch Guidance with Hitch View
• Wheels, 20" transit aluminum wheels for LPO 20" wheels and tires
• Tires, LT275/65R20 E 126/123 BF Goodrich off-road T/A KO3

Standard

• Air filtration monitoring
• Cooling, external engine oil cooler
• Alternator, 170 amps
• Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
• Cooling, auxiliary external transmission oil cooler
• Rear axle, 3.73 ratio
• Brake lining wear indicator
• Auto-locking rear differential
• Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
• StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
• Air filter, heavy-duty
• Steering, Digital Variable Steering Assist, this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
• Transmission, Allison 10-Speed automatic
• Engine, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline, (401 hp [299 kW] @ 5200 rpm, 464 lbft of torque [629 N-m] @ 4000 rpm)

Optional

• Engine block heater
• Hill Descent Control
• Skid plates
• Rear axle, 3.42 ratio
• Alternator, 220 amps
• High idle switch
• Suspension, Off-Road, includes twintube shocks
• Transfer case, two-speed active, electronic Autotrac with push button control
• Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible, (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm)
• Exhaust brake
• Alternators, dual, 220-amps primary, 170-amps auxiliary
• Battery, auxiliary, 700 cold-cranking amps/70 Amp-hr

Standard

• Bluetooth for phone, connectivity to vehicle infotainment system
• Audio System, 13.4 " diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance, includes colour touchscreen, multi-touch display, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones

Optional

• SiriusXM with 360L
• Wireless Phone Projection, for Apple CarPlay and Android Auto
• MultiPro Audio System by Kicker

Standard

• Steering wheel, heated
• Air conditioning, dual-zone automatic climate control
• Mirror, inside rearview auto-dimming
• Floor covering, colour-keyed carpeting
• Air vents, rear
• Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted
• Trailer brake controller, integrated
• Exterior Temperature Display, located in radio display
• Driver memory
• Steering wheel, wrapped
• Cargo tie downs (12)
• Compass, located in instrument cluster
• Wi-Fi Hotspot capable
• Recovery hooks, Red
• Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
• OnStar services capable
• Windows, power front, drivers express up/down
• Windows, power rear, express down
• Windows, power rear, express down

Optional

• Steering wheel audio controls
• Centre console
• Keyless Open and Start
• In-vehicle Trailering App
• ProGrade Trailering System
• Wireless Charging
• Remote vehicle starter system
• Hitch Guidance with Hitch View
• Premium Floor Liners with removable carpet insert, front
• Premium Floor Liners with removable carpet insert, rear
• Power outlet, instrument panel, 120-volt
• Power outlet, bed mounted, 120-volt
• Bed View Camera, camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen, includes Two Trailer Camera Provisions
• Steering column, manual Tilt-Wheel and telescoping
• Universal Home Remote
• LED Cargo Area Lighting
• Wheelhouse liners, rear
• Trailering wiring provisions
• USB ports, 2, Charge/Data ports located inside centre console
• USB Ports, 2 (first row) located on console
• USB ports, (2) charge-only, rear
• Bed View Camera, camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen, includes Two Trailer Camera Provisions
• Window, power front, passenger express up/down

Standard

• Seats, front bucket with centre console
• Seat adjuster, driver 10-way power including lumbar
• Seat adjuster, passenger 10-way power including lumbar