This Sierra features the highly regarded LBZ 6.6 L Duramax diesel engine—delivering approximately 360 hp and 650 lb‑ft of torque—paired with a six-speed Allison automatic transmission and part-time 4×4 drive. Key Specifications & Features: -Towing & Payload: Supports up to 12,000 lb conventional towing, with a 5th-wheel/gooseneck capacity around 14,200 lb, depending on setup, and approximately 3,600 lb payload. -Fuel Efficiency (Reported): Owners report 17–18 mpg unloaded (≈13–14 L/100 km) highway, with lower economy when towing. -Physical Details: Crew Cab with an approximate ~79-inch bed, matching the Crew Cab short-bed configuration. Heavy-duty HD suspension ensures durability under load. Condition & Maintenance: The truck comes in maroon with tan SLT interior, has a clean CARFAX, shows 278,898 km, includes two keys, and has been well serviced. Comfort & Convenience: Features include SLT leather seating, cruise control, tilt steering, power windows/locks, premium audio, and a well-appointed interior fit for daily use and tasks.
| Trim Level | SLT Crew Cab 4WD |
| VIN | 1GTHK23D96F170368 |
| Model | Sierra 2500HD |
| Brand | GMC |
| Transmission Type | Automatic |
| Price | 27490 |
| Mileage | 277898 |
| Paint Name | Maroon |
| Year | 2006 |
| Body Style | Truck |
| Interior Color | Tan |
| Cylinders | 8 |
| Wheel Size | 18 |
| Engine Type | 6.6L Duramax V8 Turbo Diesel |
| Transmission Details | Allison Transmission |
| Fuel Type | Diesel |
| Color | Maroon |
| Drive Train | 4x4 |
| Interior Material | Leather |