Use this Duramax Identification Chart to determine your engine, then select the corresponding category below.
Model Year(s) |
8th Digit of VIN |
Duramax Model & Notes |
2001 - 2004 |
1 |
LB7 |
2 |
LLY (introduced midyear 2004) |
|
2005 |
2 |
LLY (only engine offered for 2005) |
2006 |
2 |
LLY (2006 version, different from 2005 version) |
D |
LBZ (introduced late 2006) |
|
2007 |
D |
LBZ |
6 |
LMM |
|
2008 - 2010 |
6 |
LMM (only Duramax offered during these years) |
2011 - Current |
8 |
LML |
L |
LGH (chassis cab/box delete only, RPO ZW9)
|