| Assembly Site: | Moraine, Ohio |
| Applications: | Chevy Silverado and GMC Sierra 2500HD, 3500 pickups; Hummer H1, Chevy Express, and GMC Savana fullsize vans; Chevy Kodiak and GMC TopKick medium-duty trucks |
| Type: | 90-degree, V-8 charge-cooled turbodiesel |
| Displacement (cu in/cc): | 403/6,599 |
| Bore x Stroke (in/mm): | 4.06 x 3.9/103 x 99 |
| Block Material: | Cast iron with induction-hardened cylinder liners |
| Cylinder Head Material: | Cast aluminum |
| Intake Manifold: | Cast aluminum |
| Exhaust Manifolds: | Cast-nodular iron with steel pipe extension |
| Compression Ratio: | 16.8:1 |
| Valve Configuration: | Overhead valve, four valves per cylinder |
| Valve Lifters: | Mechanical roller |
| Firing Order: | 1-2-7-8-4-5-6-3 |
| Fuel System: | Direct-injection diesel with high-pressure common rail |
| Horsepower (hp @ rpm): |
| 360 @ 3,200: | 2500 HD and 3500 Chevrolet Silverado and GMC Sierra (LBZ), automatic transmission only. Available beginning 4th quarter 2005. |
| 310 @ 3,000: | 2500 HD and 3500 Chevrolet Silverado and GMC Sierra (LLY), automatic transmission only. Available through 3rd quarter 2005. |
| 300 @ 3,000: | 2500 HD and 3500 Chevrolet Silverado and GMC Sierra (LLY), manual transmission. Chevrolet Kodiak and GMC TopKick (LLY) and Hummer H1 Alpha (LLY). |
| 250 @ 3,200: | Chevrolet Express and GMC Savana (LLY). |
| Torque (lb-ft @ rpm): |
| 650 @ 1,600: | 2500 HD and 3500 Chevrolet Silverado and GMC Sierra (LBZ), automatic transmission only. Available beginning 4th quarter 2005. |
| 605 @ 1,600: | 2500 HD and 3500 Chevrolet Silverado and GMC Sierra (LLY), automatic transmission only. Available through 3rd quarter 2005, Chevrolet Kodiak and GMC TopKick (LLY). |
| 520 @ 1,600: | 2500 HD and 3500 Chevrolet Silverado and GMC Sierra (LLY), manual transmission. Chevrolet Kodiak and GMC TopKick, manual transmission (LLY) and Hummer H1 Alpha (LLY). |
| 460 @ 3,200: | Chevrolet Express and GMC Savana (LLY) |
| Fuel Shut Off (rpm): |
| 3,250: | Silverado and Sierra (Heavy Duty), Kodiak and TopKick (Medium Duty) and Hummer H1 Alpha. (LLY) |
| 3,450: | Express and Savana (LLY), Silverado and Sierra HD and 3500 (LBZ) |
| Crankshaft: | Forged steel |
| Connecting Rods: | Forged steel, stress-fractured |
| Additional Features: | Turbocharger with charge cooling; exhaust braking (medium duty only); heated air intake; GM Oil Life System |