2020 GMC Sierra 2500HD 2500HD Diesel 2WD
The 2020 GMC Sierra 2500HD 2500HD Diesel 2WD is a 445-hp 6.6-liter turbocharged with an allison 10l1000 ten-speed automatic.
| Spec | Value |
|---|---|
| Engine | |
| Engine Type | Duramax 6.6L V-8 Turbo-Diesel |
| Displacement | 6.6 L |
| Horsepower | 445 hp |
| Torque | 910 lb-ft |
| Valvetrain | Overhead valve (OHV), four valves per cylinder |
| Bore and Stroke | 103.0 × 99.0 |
| Compression Ratio | 16.0:1 |
| Injection Type | Common-rail direct fuel injection |
| Drivetrain | |
| Drive Type | 2WD |
| Transmission | |
| Transmission | Allison 10L1000 ten-speed automatic |
| 1st Gear | 4.54 |
| 2nd Gear | 2.87 |
| 3rd Gear | 2.06 |
| 4th Gear | 1.72 |
| 5th Gear | 1.48 |
| 6th Gear | 1.26 |
| 7th Gear | 1 |
| 8th Gear | 0.85 |
| 9th Gear | 0.69 |
| 10th Gear | 0.63 |
| Reverse | 4.54 |
| Final Drive | 3.42 |
| Fuel Economy | |
| Recommended Fuel | Ultra-low sulfur diesel fuel |
| Suspension | |
| Front Suspension | Short long arms independent front suspension with torsion bars |
| Rear Suspension | Semi-elliptic three-stage multi-leaf spring |
| Brakes | |
| Front Brake Disc | Four-wheel disc with Hydroboost hydraulic power assist and ABS; StabiliTrak; vented rotor 14.0 × 1.6 in (355 × 40 mm) |
| Rear Brake Disc | Four-wheel disc with Hydroboost hydraulic power assist and ABS; vented rotor 14.1 × 1.3 in (360 × 34 mm) [SRW] |
| Tires & Wheels | |
| Wheels Front | 17-in aluminum |
| Wheels Rear | 17-in aluminum |
| Tires Front | LT235/80R17 all-season |
| Tires Rear | LT235/80R17 all-season |
| Dimensions & Weight | |
| Length | 250 in |
| Width | 81.85 in |
| Height | 79.82 in |
| Wheelbase | 158.94 in |
| Front Track | 68.1 in |
| Rear Track | 68.3 in |
| Curb Weight | 7,430 lbs |
| Interior | |
| Headroom Front | 43.03 in |
| Headroom Rear | 40.12 in |
| Legroom Front | 44.53 in |
| Legroom Rear | 43.4 in |
| Shoulder Room Front | 66.02 in |
| Shoulder Room Rear | 65.3 in |
| Hip Room Front | 61.18 in |
| Hip Room Rear | 60.24 in |