2015 GMC Sierra 2500HD available WiFi 4WD Crew Cab 153.7" Denali

Rear axle, 4.10 ratio (Requires (L96) Vortec 6.0L V8 SFI engine.)

Suspension Package, Standard includes 51mm twin tube shock absorbers and 33mm front stabilizer bar

Pickup box

GVWR, 9500 lbs. (4309 kg) (Requires (L96) Vortec 6.0L V8 SFI engine and 2500HD model.)

Air cleaner, high-capacity

Transfer case, electronic shift with rotary dial controls (Requires 4WD models.)

Differential, heavy-duty locking rear

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

Alternator, 150 amps

Trailer brake controller, integrated

Frame, fully-boxed, hydroformed front section

Underbody Shield, frame-mounted shields includes front underbody shield starting behind front bumper and running to first cross-member, protecting front underbody, oil pan, differential case and transfer case

Cargo tie downs (4), movable upper

Steering, Recirculating Ball

Brakes, 4-wheel antilock, 4-wheel disc with DuraLife brake rotors

Exhaust, aluminized stainless-steel muffler and tailpipe

Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door

Wheelhouse liners, rear

Bumper, front, body-color

CornerStep, rear bumper

Bumper, rear body-color with bumper CornerSteps

Moldings, bodyside, chrome

Headlamps, halogen projector with LED signature

Lamps, cargo area, cab mounted with switch on center switch bank

LED Lighting, cargo box with switch on center switch bank

Fog lamps, front, halogen

Mirror caps, chrome

Glass, deep-tinted

Door handles, chrome

Tailgate and bed rail protection caps, top

Tailgate, locking, utilizes same key as ignition and door (Deleted with (ZW9) pickup box delete.) (Deleted when (ZW9) pickup box delete is ordered.)

Tailgate, EZ-Lift and Lower

Bose Sound with 6 speaker system (7 speaker system including subwoofer when ordered with bucket seats).

Seat, rear 60/40 folding bench (folds up), 3-passenger (includes child seat top tether anchor)

Steering column, manual Tilt-Wheel and telescoping

Console, floor mounted, reconfigurable with moveable cup holders, cell phone storage, power cord management and hanging file holder capability

Floor covering, color-keyed carpeting

Instrumentation, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure

Windows, power with driver express up and down and express down on all other windows

Theft-deterrent system, unauthorized entry

Pedals, power-adjustable

Remote vehicle starter system

Air conditioning, dual-zone automatic climate control

Power outlet, 110-volt AC

Mirror, inside rearview auto-dimming

Visors, driver and front passenger illuminated vanity mirrors

Assist handle, front passenger and driver on A-pillars

Front and Rear Park Assist, Ultrasonic

StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist

Daytime Running Lamps with automatic exterior lamp control

Air bags, single-stage frontal and thorax side-impact, driver and front passenger, and head curtain side-impact, front and rear outboard seating positions (Always use safety belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)

Rear Vision Camera with dynamic guide lines

Tire Pressure Monitoring System (does not apply to spare tire)