| Engine | Used in | Years (model years, per sources) |
|---|---|---|
| LB7 | HD pickups | 2001 to 2004 |
| LLY | HD pickups | 2004.5 to 2005 (2006 in some) |
| LBZ | HD pickups | 2006 to 2007 |
| LMM | HD pickups (first Duramax with a DPF) | 2007.5 to 2010 |
| LML | HD pickups (CP4 pump) | 2011 to 2016 |
| L5P | HD pickups | 2017 on |
| 3.0 LM2 | Silverado/Sierra 1500, then SUVs | 2019 on (SUVs from 2021) |
| 3.0 LZ0 | Silverado/Sierra 1500, SUVs | 2023 on |
Per RealTruck, Prosource Diesel, GM Authority and Wikipedia. Year splits vary slightly between sources.
Duramax-specific pages
Cooling
My diesel is losing coolant with no visible leak. Why?
Troubleshoot →Fuel systemWhat is the CP4 fuel pump issue on diesel trucks?
Troubleshoot →Common to all diesels
These apply to Duramax engines too.
- Hard start when cold
- Cranks, will not start
- White smoke
- Black smoke
- Blue smoke
- Low power / limp mode
- Rough idle
- Water in fuel light
- Fuel in the oil
- Overheating when towing
- DPF and regeneration
- Cold-weather gelling
- DEF / SCR faults
- NOx sensor problems
- Clogged EGR valve
- Turbo whistle / boost leak
- Injector knock
- Wet stacking
- Glow plug / grid heater failure
- Hot transmission when towing
- Fuel filter restriction
- Air in the fuel
- Oil consumption
- Crankcase blow-by
- Cavitation / liner pitting
- Maintenance basics
- Winter diesel prep
- Buying a used diesel
- Is a DPF/EGR delete legal?
Where this comes from
- RealTruck: Duramax engine generations
- Prosource Diesel: Duramax generations guide
- GM Authority: GM "baby Duramax" engines
- Wikipedia: Duramax I6 engine
Last reviewed 2026-10-19. General information only: confirm with your service information and a qualified diesel technician.