The GM Duramax 3.0L I-6 LZ0 is a turbo-diesel engine produced by General Motors for use in various vehicles, primarily full-size half-ton pickup trucks and full-size SUVs. Colloquially known as “baby Duramax“, the engine represents the second generation of GM’s 3.0L I-6 engine.
In April 2022, GM Authority was first to report that the engine was set to arrive for the 2023 Silverado 1500 and 2023 Sierra 1500.
| Displacement: | 3000 cc (3.0L) |
| Configuration: | Inline-six, DOHC |
| Fuel: | Diesel |
| Aspiration: | Forced induction (turbocharger) |
| Introduction: | 2023 model year |
| Discontinuation: | In production |
| Application: | Full-size pickup trucks & SUVs |
| Predecessor: | LM2 |
| Successor: | - |
| Assembly: | GM Flint Engine Operations, MI, USA |
Overview
The new LZ0 engine delivers a sizable increase in power and torque over its predecessor, the LM2.
- Max power is 305 horsepower, a 10 percent increase over the 277 horsepower in the LM2
- Max torque is 495 pound-feet, a 7.6 percent increase over the 460 pound-feet in the LM2
The gains in power and torque are the result of upgrades to several key components for optimum performance, including:
- New steel pistons with a revised combustion bowl
- Retuned turbo compressor
- New fuel injectors
- Improved temperature control features
Specs
Full specs coming soon.
Vehicle Applications
| Model Year | Vehicle | Transmission | Power (hp / kW) @ RPM | Torque (lb-ft / Nm @ RPM) |
|---|---|---|---|---|
| 2023 – present | Chevrolet Silverado 1500 | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
| 2023 – present | GMC Sierra 1500 | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
| 2025 – present | Chevrolet Tahoe | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
| 2025 – present | Chevrolet Suburban | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
| 2025 (expected) – present | GMC Yukon | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
| 2025 (expected) – present | GMC Yukon XL | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
| 2025 (expected) – present | Cadillac Escalade | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
| 2025 (expected) – present | Cadillac Escalade ESV | 10-speed MQB 10L80 | 305 / 227 @ 3750 | 495 / 671 @ 2750 |
