Audio system feature, 4-speaker system|SiriusXM, delete|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 or (U2K) SiriusXM Radio.)|Lamps, cargo area, cab mounted with switch on center switch bank|Mirrors, outside high-visibility vertical camper-style, Black with manual folding and extension and lower convex spotter glass|Wheels, 19.5 x 6.75, steel, Black painted, 8-holes, hub piloted|Grille, base, molded in color, Black|Tires, rear 225/70R19.5G highway blackwall Pirelli Max Axle Load: 15,000 lb. (Standard on models built after July 17th, 2023) (Requires (XEY) Tires front 225/70R19.5G Highway blackwall Pirelli.)|Door handles, Black|Spare tire delete|Lamps, Smoked Amber roof marker|Lamps, rear, stop/turn/backup (1-piece assembly) with license plate light|Glass, solar absorbing, tinted|Antenna, fixed mast|Wheel, spare delete|Headlamps, halogen projector-beam|Bumper, front, Black|Grille guard screen, insect protection (mounted behind grille)|Tires, front 225/70R19.5G highway blackwall Pirelli Max Axle Load: 7,940 lb. (Standard on models built after July 17th, 2023) (Requires (YEY) Tires, rear 225/70R19.5G highway blackwall Pirelli, Max Axle Load: 15,000 lb. or (YEZ) Tires, rear 225/70R19.5G traction blackwall Pirelli, Max Axle Load: 15,000 lb.)|Assist steps|Front fender extension, painted body color|Interior trim, Jet Black/Dark Ash (Required and only available with (H2Q/H2R) Dark Ash seats with Jet Black interior accents.)|Seat Belt, Black|Steering column, manual Tilt-Wheel|Assist handle, front passenger and driver on A-pillars|Seat trim, Vinyl|Upfitter switch kit provides up to 4-30 amp circuits to facilitate installation of aftermarket electrical accessories located on the instrument panel|Speedometer, miles/kilometers|Instrumentation, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure|Steering wheel, urethane|Air conditioning, single-zone|Windows, manual driver and front passenger|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.|Mirror, inside rearview manual day/night|Door locks, power|Floor covering, Graphite-colored rubberized-vinyl|Driver Information Center, 3.5-inch diagonal monochromatic display, provides warning messages and basic vehicle information|Cruise control, steering wheel-mounted|Visors, driver and front passenger, vinyl|GVWR, 16,500 lb. (7484 kg) (Silverado 4500 HD 4WD 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.)|Batteries, heavy-duty dual 1100 cold-cranking amps includes battery box mounted to left side under cab|Rear axle, 4.30 ratio Max road speed: 75 MPH|Exhaust system, rear exit|Rear axle, 11,000 lb. (4,999 kg) Dana Spicer S14-110, single reduction|Emissions, USA 50 State certified|Four wheel drive|Axle lubricant, rear, synthetic oil EmGard FE -75W-90|Axle lubricant, front, synthetic oil EmGard FE-75W-90|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|Fuel, diesel B20|Rear suspension, 11,000 lb. (4,990 kg) multi-leaf, vari-rate|Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible 350 hp

• 2700 rpm, 700 lb.-ft. torque