Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Black
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
26-018A
Fuel Type
Diesel
Trim Details
4WD Crew Cab Standard Box High Country
Description
2021 Chevrolet Silverado 3500HD High Country 4x4 | Duramax Diesel | Allison 10-Speed | High Country Luxury
Heavy-duty capability meets top-tier luxury in this 2021 Chevrolet Silverado 3500HD High Country Crew Cab 4x4 SRW Standard Box. Finished in sleek Black with an upscale Jet Black / Umber perforated leather interior, this Silverado is powered by the legendary 6.6L Duramax Turbo-Diesel V8 paired with the Allison 10-speed automatic transmission—built for serious towing, hauling, and long-distance comfort.
Key Features
6.6L Duramax Turbo-Diesel V8 (L5P) – 445 HP Exceptional torque and proven durability for heavy trailers, RVs, and demanding workloads.
Allison 10-Speed Automatic Transmission (MGM) Industry-respected transmission delivering smooth shifts and towing confidence.
4x4 Four-Wheel Drive System Confident traction for snow, muddy job sites, gravel roads, and changing weather conditions.
High Country 3LZ Trim Chevrolet’s premium heavy-duty trim level with luxury features and advanced technology.
Power Sunroof (CF5) Adds natural light and an open-air feel to the premium cabin.
Technology Package (CWM) Enhanced camera systems and advanced features ideal for towing and maneuvering.
Safety Package II (PDJ) Added driver-assist and safety technologies for greater confidence on the road.
Gooseneck / 5th Wheel Prep Package (Z6A) Factory-installed towing prep for fifth-wheel campers, horse trailers, and equipment.
Perforated Leather Interior – Jet Black / Umber (HVG) Rich two-tone premium seating surfaces for upscale comfort.
Crew Cab / Standard Box Configuration Spacious interior with practical bed length for towing setups and cargo use.
Exterior: Black (GBA) Bold finish that enhances the truck’s commanding High Country presence.
Why Buy This Silverado 3500HD High Country?
The 2021 Silverado 3500HD High Country Duramax offers the best of both worlds: luxury interior comfort and true heavy-duty diesel capability. Whether towing a fifth wheel or driving daily, this truck delivers premium confidence and performance.
Perfect For
Heavy towing • RV owners • Contractors • Diesel enthusiasts • Luxury truck buyers • Long-distance travel
Packages & Options
Standard Equipment
Technical Specifications
-
AM/FM Stereo
-
Auxiliary Audio Input
-
Bluetooth Connection
-
MP3 Player
-
Navigation System
-
Smart Device Integration
-
Requires Subscription
-
Satellite Radio
-
HD Radio
-
Premium Sound System
-
WiFi Hotspot
-
Aluminum Wheels
-
Tires - Front All-Terrain
-
Tires - Rear All-Terrain
-
Conventional Spare Tire
-
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
-
Bumper, front (Body-colour.)
-
Bumper, rear (Body-colour.)
-
CornerStep, rear bumper
-
BedStep, Black integrated on forward portion of bed on driver and passenger side
-
Running Boards/Side Steps
-
Mouldings, beltline, stainless steel
-
Wheelhouse liners, rear (Not available with dual rear wheels.)
-
Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner
-
Chrome front grille bar with Gold bowtie. Includes Chrome grille inserts with Bronze accents.
-
Daytime Running Lights
-
Fog Lamps
-
Taillamps, LED with signature
-
Lamps, cargo area cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheel
-
LED Cargo Area Lighting located in pickup bed, activated with switch on centre switch bank or key fob
-
Heated Mirrors
-
Integrated Turn Signal Mirrors
-
Power Folding Mirrors
-
Power Mirror(s)
-
Mirror caps, chrome
-
Privacy Glass
-
Rear Defrost
-
Sliding Rear Window
-
LPO, Polished exhaust tip (dealer installed) (Requires (L8T) 6.6L V8 gas engine. Not included when (L5P) Duramax 6.6L Turbo-Diesel V8 engine is ordered.)
-
Tailgate, gate function power up/down with power lock and release
-
Bed Liner
-
Bucket Seats
-
Leather Seats
-
Driver Adjustable Lumbar
-
Power Driver Seat
-
Passenger Adjustable Lumbar
-
Power Passenger Seat
-
Pass-Through Rear Seat
-
Heated Front Seat(s)
-
Cooled Front Seat(s)
-
Heated Rear Seat(s)
-
Mirror Memory
-
Seat Memory
-
Centre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
-
Floor covering, colour-keyed carpeting
-
Floor Mats
-
Leather Steering Wheel
-
Heated Steering Wheel
-
Adjustable Steering Wheel
-
Steering Wheel Audio Controls
-
Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
-
Driver Information Centre, enhanced, 8" diagonal multicolour digital display includes analogue speedometer and tachometer gauges
-
Tire Pressure Monitor
-
Exterior Temperature Display located in radio display
-
Window, power front, drivers express up/down
-
Power Windows
-
Power Door Locks
-
Remote Engine Start
-
Keyless Entry
-
Keyless Start
-
Cruise Control
-
Universal Garage Door Opener
-
Security System
-
Steering column, lock control, electrical
-
Wireless Charging (Not compatible with all phones. Compliant batteries include QI and PMA technologies. Reference Mobile devices manual to confirm what type of battery it uses.)
-
Power Outlet
-
Auxiliary Audio Input
-
MP3 Player
-
USB ports, dual, charge-only (2nd row)
-
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
-
A/C
-
Climate Control
-
Multi-Zone A/C
-
Rear A/C
-
Rear Defrost
-
Auto-Dimming Rearview Mirror
-
Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
-
Chevrolet Connected Access capable (Subject to terms. See onstar.ca or dealer for details.)
-
8 Cylinder Engine
-
Gasoline Fuel
-
6-Speed A/T
-
A/T
-
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine. Not available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.)
-
Durabed, pickup bed
-
GVWR, 11,350 lbs. (5148 kg) with single rear wheels (Included and only available with CK30743 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
-
Air filter, heavy-duty
-
Transfer case, two-speed active electronic Autotrac with push button control
-
Locking/Limited Slip 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
-
Tow Hooks
-
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
-
Suspension Package
-
Power Steering
-
4-Wheel Disc Brakes
-
ABS
-
Brake lining wear indicator
-
Capless Fuel Fill (Requires (L8T) 6.6L V8 gas engine.)
-
Tow Hitch
-
Stability Control
-
Traction Control
-
Daytime Running Lights
-
Driver Air Bag
-
Front Head Air Bag
-
Front Side Air Bag
-
Passenger Air Bag
-
Passenger Air Bag Sensor
-
Rear Head Air Bag
-
Requires Subscription
-
Telematics
-
Rear Parking Aid
-
Aerial View Display System
-
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
-
Hitch Guidance dynamic single line to aid in trailer alignment for hitching
-
Back-Up Camera
-
Cross-Traffic Alert
-
Blind Spot Monitor
-
Rear Seat Reminder
-
Driver Restriction Features
-
Tire Pressure Monitor
No matches were found.
-
Vehicle NameChevrolet Silverado 3500HD
-
Body StyleCrew Cab Pickup
-
Body CodeE63
-
DrivetrainFour Wheel Drive
-
Trans Order CodeMGM
-
Trans Type10
-
Trans Description Cont.Automatic
-
First Gear Ratio (:1)4.54
-
Second Gear Ratio (:1)2.86
-
Third Gear Ratio (:1)2.06
-
Fourth Gear Ratio (:1)1.72
-
Fifth Gear Ratio (:1)1.48
-
Sixth Gear Ratio (:1)1.26
-
Seventh Gear Ratio (:1)1.00
-
Eighth Gear Ratio (:1)0.85
-
Ninth Gear Ratio (:1)0.68
-
Tenth Gear Ratio (:1)0.63
-
Reverse Ratio (:1)4.54
-
Passenger Capacity5
-
Front Head Room (in)43.03
-
Front Leg Room (in)44.53
-
Front Shoulder Room (in)66.02
-
Front Hip Room (in)61.18
-
Second Head Room (in)40.12
-
Second Leg Room (in)43.4
-
Second Shoulder Room (in)65.3
-
Second Hip Room (in)60.24
-
Gross Axle Wt Rating - Front (lbs)4800
-
Gross Axle Wt Rating - Rear (lbs)7250
-
Curb Weight - Front (lbs)3846
-
Curb Weight - Rear (lbs)2911
-
Gross Vehicle Weight Rating Cap (lbs)12100
-
Gross Combined Wt Rating (lbs)24000
-
Dead Weight Hitch - Max Trailer Wt. (lbs)5000
-
Dead Weight Hitch - Max Tongue Wt. (lbs)500
-
Wt Distributing Hitch - Max Trailer Wt. (lbs)14500
-
Wt Distributing Hitch - Max Tongue Wt. (lbs)1450
-
Fifth Wheel Hitch - Max Trailer Wt. (lbs)16230
-
Fifth Wheel Hitch - Max Tongue Wt. (lbs)4057
-
Maximum Trailering Capacity (lbs)20000
-
Engine Order CodeL8T
-
Engine TypeGas V8
-
Displacement6.6L
-
Fuel SystemDirect Injection
-
SAE Net Horsepower @ RPM401 @ 5200
-
SAE Net Torque @ RPM464 @ 4000
-
Engine Oil CoolerYes
-
Cold Cranking Amps @ 0° F (Primary)720
-
Maximum Alternator Capacity (amps)220
-
Frame TypeHydroformed
-
Suspension Type - FrontShort/Long Arm w/Torsion Bars
-
Suspension Type - Rear3-Stage Multi-Leaf
-
Axle Type - FrontIndependent
-
Axle Ratio (:1) - Front3.42
-
Axle Ratio (:1) - Rear3.42
-
Shock Absorber Diameter - Front (mm)51
-
Shock Absorber Diameter - Rear (mm)51
-
Stabilizer Bar Diameter - Front (in)1.38
-
Front Tire Order CodeQF9
-
Rear Tire Order CodeQF9
-
Spare Tire Order CodeZYG
-
Front Tire SizeLT275/65R20
-
Rear Tire SizeLT275/65R20
-
Spare Tire SizeLT275/70R18
-
Front Tire Capacity (lbs)3020
-
Rear Tire Capacity (lbs)3748
-
Spare Tire Capacity (lbs)3638
-
Front Wheel Size (in)20 x 8.5
-
Rear Wheel Size (in)20 x 8.5
-
Spare Wheel Size (in)18 x 8
-
Front Wheel MaterialAluminum
-
Rear Wheel MaterialAluminum
-
Spare Wheel MaterialSteel
-
Steering TypePwr Recirculating Ball
-
Steering Ratio (:1), At LockN/A
-
Turning Diameter - Curb to Curb (ft)52.7
-
Turning Diameter - Wall to Wall (ft)N/A
-
Brake TypePwr
-
Brake ABS System4-Wheel
-
Disc - FrontYes
-
Disc - RearYes
-
Front Brake Rotor Diam x Thickness (in)14 x 1.6
-
Rear Brake Rotor Diam x Thickness (in)14.1 x 1.3
-
Fuel Tank Capacity, Approx (L)136
-
Wheelbase (in)158.94
-
Length, Overall (in)249.95
-
Width, Max w/o mirrors (in)81.85
-
Height, Overall (in)80.87
-
Cab to Axle (in)42.1
-
Ground to Top of Load Floor (in)38.9
-
Ground Clearance, Front (in)11.18
-
Ground Clearance, Rear (in)11.18
-
Cargo Box Length @ Floor (in)82.25
-
Cargo Box Width @ Floor (in)71.4
-
Cargo Box Width @ Wheelhousings (in)51.85
-
Cargo Box (Area) Height (in)21
-
Cargo Volume (ft³)69.5
No matches were found.
Find Us
Similar Vehicles
VIN: 1FT8W3BT3NEE72925