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Old 06-22-2010, 02:26 AM   #1 (permalink)
Maine Towing
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Do I have an LLY or LBZ?

Can anybody tell me how to identify the engine in my new to me 2006 Chevy 3500 DRW? I don't know if it has the LLY or LBZ package - all I know is that is has insane power compared to my old truck. Thanks
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Old 06-22-2010, 03:34 AM   #2 (permalink)
VenomHP
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check the 8th digit of the vin or check the glove box, there will be a code saying which engine you have
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Old 06-22-2010, 09:05 AM   #3 (permalink)
ar077
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Easier way -- look at the emblem on the door. If it says "DURAMAX Diesel" it's an LLY. If it says "Allison DURAMAX" it's an LBZ.
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Old 06-22-2010, 01:13 PM   #4 (permalink)
dwrat
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8th digit of the vin will tell you.
if it's a "2" it's a lly
if it's a "D" it's a LBZ
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