The 3.0-liter inline-six turbodiesel GM LM2 (Duramax 3.0) was produced from 2019 to 2024 for the Chevrolet Silverado, Tahoe and Suburban, the GMC Sierra and Yukon and the Cadillac Escalade. This time GM commissioned the development from GM Powertrain Torino rather than VM Motori; the engine produces 277 hp and 624 Nm.
LZ0 family: LZ0, LM2.
Specifications
| Production years | 2019-2024 |
| Displacement, cc | 2993 |
| Fuel system | Common Rail |
| Power output, hp | 277 |
| Torque output, Nm | 624 |
| Cylinder block | aluminum R6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 84 |
| Piston stroke, mm | 90 |
| Compression ratio | 15.0 |
| Features | DOHC |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | Garrett VGT |
| Recommended engine oil | 0W-20 |
| Engine oil capacity, liter | 6.7 |
| Fuel type | diesel |
| Fuel consumption, L/100 km (for Chevrolet Tahoe 2022) — city — highway — combined |
11.8 9.0 10.7 |
| Weight, kg | 212 |
The engine was installed on:
- Cadillac Escalade 5 (GMT1UL) in 2020 – 2024;
- Chevrolet Silverado 4 (GMT1RC) in 2019 – 2022;
- Chevrolet Suburban 12 (GMT1YC) in 2020 – 2023;
- Chevrolet Tahoe 5 (GMT1UC) in 2020 – 2024;
- GMC Sierra 5 (GMT1RG) in 2019 – 2022;
- GMC Yukon 5 (GMT1UG) in 2020 – 2024;
- GMC Yukon XL 5 (GMT1YG) in 2020 – 2023.
Disadvantages of the GM LM2 engine
- A reliable engine with an aluminum block and cast-iron liners, but the Denso fuel system with 2500 bar injectors is demanding on fuel quality;
- Early engines suffered from long cranking caused by the camshaft position sensor, which is difficult and expensive to replace;
- There were complaints about an unreliable fan and loosening turbocharger bolts;
- The oil pump is driven by a belt; its failure is dangerous for the engine, and replacing it requires removing the transmission.
Frequently asked questions about the GM LM2
How much power does the GM LM2 make?
The GM LM2 develops 277 hp and 624 Nm of torque.
How much oil does the GM LM2 take and which one?
Engine oil capacity: 6.7 liters. Recommended oil: 0W-20.
Does the GM LM2 have a timing belt or chain?
The GM LM2 uses a timing chain.
Is the GM LM2 turbocharged?
Yes, the GM LM2 is turbocharged (Garrett VGT).
What is the fuel consumption of the GM LM2?
Chevrolet Tahoe 2022: city 11.8, highway 9.0, combined 10.7 L/100 km.
What cars was the GM LM2 installed on?
Cadillac Escalade 5 (GMT1UL) in 2020 - 2024; Chevrolet Silverado 4 (GMT1RC) in 2019 - 2022; Chevrolet Suburban 12 (GMT1YC) in 2020 - 2023; Chevrolet Tahoe 5 (GMT1UC) in 2020 - 2024; GMC Sierra 5 (GMT1RG) in 2019 - 2022; GMC Yukon 5 (GMT1UG) in 2020 - 2024 and 1 more (see the full list above).
What are the common problems of the GM LM2?
A reliable engine with an aluminum block and cast-iron liners, but the Denso fuel system with 2500 bar injectors is demanding on fuel quality. Early engines suffered from long cranking caused by the camshaft position sensor, which is difficult and expensive to replace. All known problems.
What engines are related to the GM LM2?
LZ0 family: LZ0.
