Categorized Options: Exterior@Antenna, fixed mast~Exterior@Assist steps~Exterior@Bumper, front, Black~Exterior@Door handles, Black~Exterior@Front fender extension, painted body color~Exterior@Glass, solar absorbing, tinted~Exterior@Grille guard screen, insect protection (mounted behind grille)~Exterior@Grille, base, molded in color, Black~Exterior@Headlamps, halogen projector-beam~Exterior@Lamps, cargo area, cab mounted with switch on center switch bank~Exterior@Lamps, rear, stop/turn/backup (1-piece assembly) with license plate light~Exterior@Lamps, Smoked Amber roof marker~Exterior@Mirrors, outside high-visibility vertical camper-style, Black with manual folding and extension and lower convex spotter glass~Exterior@Spare tire delete~Exterior@Tires, front 225/70R19.5G highway blackwall Pirelli Max Axle Load: 7,940 lbs. (Requires (YEY) Tires, rear 225/70R19.5G highway blackwall Pirelli, Max Axle Load: 15,000 lbs. or (YEZ) Tires, rear 225/70R19.5G traction blackwall Pirelli, Max Axle Load: 15,000 lbs.)~Exterior@Tires, rear 225/70R19.5G highway blackwall Pirelli Max Axle Load: 15,000 lbs. (Requires (XEY) Tires front 225/70R19.5G Highway blackwall Pirelli.)~Exterior@Wheel, spare delete~Interior@6-speaker audio system~Interior@Air conditioning, single-zone~Interior@Assist handle, front passenger and driver on A-pillars~Interior@Audio system, 4.2 diagonal color display, AM/FM stereo with USB port and auxiliary jack (Requires (AE7) front 40/20/40 split-bench seat. Not available with (UE1) OnStar services capable.)~Interior@Cruise control, steering wheel-mounted~Interior@Door locks, power~Interior@Driver Information Center, 3.5 diagonal monochromatic display provides warning messages and basic vehicle information~Interior@Floor covering, Graphite-colored rubberized-vinyl~Interior@Instrumentation, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure~Interior@Interior trim, Jet Black/Dark Ash (Required and only available with (H2Q/H2R) Dark Ash seats with Jet Black interior accents.)~Interior@Mirror, inside rearview manual day/night~Interior@Seat Belt, Black~Interior@Seat trim, Vinyl~Interior@Seat, rear 60/40 folding bench (folds up), 3-passenger (includes child seat top tether anchor)~Interior@Seats, front 40/20/40 split-bench, 3-passenger driver and front passenger recline with outboard head restraints and center fold-down armrest with storage. Vinyl has fixed lumbar and cloth has manually adjustable driver lumbar. (Not available with (H0U) Jet Black Interior.)~Interior@SiriusXM, delete~Interior@Speedometer, miles/kilometers~Interior@Steering column, manual Tilt-Wheel~Interior@Steering wheel, urethane~Interior@Upfitter switch kit provides up to 4-30 amp circuits to facilitate installation of aftermarket electrical accessories located on the instrument panel~Interior@Visors, driver and front passenger, vinyl~Interior@Windows, power with driver express up and down and express down on all other windows~Mechanical@Alternator, 150 amps~Mechanical@Axle lubricant, front, synthetic oil EmGard FE-75W-90~Mechanical@Axle lubricant, rear, synthetic oil EmGard FE -75W-90~Mechanical@Axle to End of Frame, 49 (Requires wheelbase (EM1) 199 or (FNV) 175. Not available with (G40), (GP1) or (GP8) rear air suspension.)~Mechanical@Axle, Open rear axle, non-locking rear~Mechanical@Batteries, heavy-duty dual 1100 cold-cranking amps includes battery box mounted to left side under cab~Mechanical@Brakes, hydraulic, heavy duty Bosch/Meritor/Wabco system with 4-channel (ABS) (Includes (J69) driveline park brake.)~Mechanical@Capped Fuel Fill~Mechanical@Emissions, USA 50 State certified~Mechanical@Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible 350 hp @ 2500 rpm, 750 lb.-ft. torque @ 1400 rpm~Mechanical@Exhaust brake~Mechanical@Exhaust system, right side exit, behind rear wheels (Requires (FNV) 175 wheelbase.)~Mechanical@Four wheel drive~Mechanical@Front axle, 7,500 lbs, Dana Spicer 60-256, single-reduction, front driving~Mechanical@Front suspension, 7,500 lbs. (3,402 kg) multi-leaf, includes shock absorbers~Mechanical@Fuel tank, rear only, 40 gallon mounted between frame side rails and behind rear axle~Mechanical@Fuel, diesel B20~Mechanical@GVWR, 16,500 lbs. (7484 kg) (Silverado 4500 HD 4X4 models require one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension. (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. (3) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (J27) 15.5k rear axle and one of the following rear suspensions: (91B) 13.5k LiquidSpring prep single volume rear suspension, (91C) 13.5k LiquidSpring prep stacked volume rear suspension, (91D) 15.5k LiquidSpring prep single volume rear suspension or (91E) 15.5k LiquidSpring prep stacked volume rear suspension.)~Mechanical@Highway Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1700HS ratios: 3.10 1ST, 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Highway Series, 19.5K GVW & 26K GCW Max., requires PTX and park pawl. Available with GVWs less than or equal to 19.5K (Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs. GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (R6G) 26,000 lb. GCWR (11,793 kg).)~Mechanical@Incomplete vehicle~Mechanical@Neutral-at-Stop Automatic transmission shifts to neutral when the service brake is depressed while the vehicle is at a complete stop, and remains in neutral until the service brake is released~Mechanical@Rear axle, 11,000 lb. (4,999 kg)~Mechanical@Rear axle, 4.30 ratio Max road speed: 79 MPH~Mechanical@Rear suspension, 11,000 lbs. (4,990 kg) multi-leaf, vari-rate~Mechanical@Steering, power (Bosch S2 8014 Plus)~Mechanical@Trailer brake controller, integrated~Mechanical@Trailering provisions, trailering wire harness only, trailer combined (Stop/Tail/Turn) connection socket and harness mounted at rear of frame.~Mechanical@Transmission shift control calibration, fuel sense Performance~Mechanical@Wheelbase, 175 (444.5 cm), 60 CA (Requires (F0C) 49 axle to end of frame. Not available with (N12) straight exhaust system that terminates ahead of rear wheels or (NPK) right side exit exhaust ahead of rear wheels.)~Safety@Airbag deactivation switch, frontal passenger-side (Included and only available with (AY0) airbags.)~Safety@Airbags, Single-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; (Always use seat 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.)~Safety@Brake, parking, driveline park brake system~Safety@Daytime Running Lamps, with automatic exterior lamp control~Safety@Horn, Trumpet Style, single-note~Safety@OnStar, delete~Safety@Rear Vision Camera, display integrated into Radio (Shipped loose in cab for upfitter installation.)~Safety@StabiliTrak, Electronic Stability Control System with Traction Control includes Electronic Trailer Sway Control and Hill Start Assist~Safety@Traction control Engine: Turbocharged Diesel V8 6.6L/403 EngineType: Turbocharged Diesel V8 6.6L/403 Drive: 4WD