2021 Chevrolet Silverado 2500HD Work Truck

Duramax diesel power. Z71 Off-Road Package. Eight-foot long bed.

This well-maintained CARFAX 1-Owner 2021 Chevrolet Silverado 2500HD Work Truck 4WD Crew Cab features Summit White paint, a Jet Black interior, and a 172-inch wheelbase with an eight-foot long bed. Its factory Z71 Off-Road Package, integrated trailer brake controller, and Duramax diesel engine make it a practical choice for contractors, equipment operators, and commercial fleets. Clean CARFAX with no accidents or damage reported. Inspected, serviced and ready to go. 4 Month/4,000-Mile Warranty.

The 6.6L Duramax Turbo-Diesel V8 produces 445 horsepower and 910 lb-ft of torque, paired with an Allison 10-speed automatic transmission and Four-Wheel Drive. A 3.42 rear axle, automatic-locking rear differential, and engine block heater provide additional capability for demanding work.

The Z71 Off-Road Package includes skid plates for added underbody protection. The WT Convenience Package adds cruise control, a 110V AC power outlet, and a rear-window defogger. The spacious Crew Cab provides seating for up to six occupants, with durable materials and practical interior storage.

Factory towing equipment includes an integrated trailer brake controller, trailer wiring provisions, and an exhaust brake to assist with downhill speed control. Five auxiliary upfitter switches allow properly installed accessories to be controlled from the cab.

Additional equipment includes SiriusXM capability, OnStar and Chevrolet Connected Services capability, a rearview camera, and a six-speaker audio system.

The CARFAX documents 27 service history records, including regular oil changes, fuel-filter replacements, tire maintenance, and transmission and transfer case service. Recent maintenance includes an oil and filter change in April 2026 and tire replacement in May 2026. Adam Auto Group also performed a multi-point inspection, checked all fluids, and completed a fresh oil and filter change in preparation for sale.

For buyers needing substantial diesel pulling power, an eight-foot cargo bed, and four-door passenger accommodations, this Silverado offers a capable heavy-duty work configuration.

Frequently Asked Questions

Q: What does the Duramax exhaust brake do?
A: It helps control downhill speed by using engine exhaust restriction, reducing reliance on the service brakes.

Q: What are the auxiliary upfitter switches used for?
A: They provide convenient controls for compatible aftermarket equipment, such as auxiliary lighting, when properly installed.

Q: Does this truck require Diesel Exhaust Fluid (DEF)?
A: Yes. Its diesel emissions system uses DEF, which must be replenished periodically.

Local Availability

See this 2021 Chevrolet Silverado 2500HD Work Truck 4WD Crew Cab Long Bed at Adam Auto Group in Crestwood, IL, just south of I-294 on Cicero Avenue. Call (708) 972-7914 to confirm availability today.

Adam Auto Group advertises used vehicles for sale in Crestwood, Illinois in accordance with Illinois dealer advertising regulations. We make reasonable efforts to ensure all vehicle pricing, mileage, equipment, and descriptions are accurate; however, typographical errors, data transmission issues, or listing delays may occur. All advertised vehicles are subject to availability and prior verification.

Advertised prices exclude Illinois sales tax, title, license, registration, finance charges, optional products, and dealer fees permitted under Illinois law, including documentation and electronic filing fees. Online pricing is for informational advertising purposes only and does not constitute a binding offer to sell.

Final pricing and purchase terms are governed exclusively by executed dealership purchase documents. Customers are responsible for confirming vehicle details and pricing with Adam Auto Group prior to completing a transaction.