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Discussion Starter · #1 ·
:help
How do you find out what version of Duramax you have in your truck.

I have a 05 truck that was sold in Oct 04 (according to the CarFax)

So I do not know if I have a 04.5 or 05 LLY and is there a difference in programming or parts.

Thanks in advance
 

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what's the 8th digit in your vin? (8th from left) Should be a 1 (LB7) or a 2 (LLY)

hope that helps
 

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All 05 trucks came with the LLY engine. :) And all parts are the same as a 04.5 LLY truck.
 

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Discussion Starter · #5 ·
jc1843 thanks. I understand I have the LLY but my question is how do you know if you have a 04.5 or and 05 build.
 

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Discussion Starter · #7 ·
I would like to know.
Again just more info for me.

I know 03-04 had different front ends. (I owned 03 and 04 Z71's) and to add 03,04 2500HD had LB7 Duramax's.
 

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Discussion Starter · #9 ·
that answers my question. DUH

since my truck was sold in Oct 04 it probably is a 04.5 LLY

Thanks for waking me up.:drink
 

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The 05 vehicles are usually started the built in the summer of 2004, then they start to arrive at the dealer around September 04. Even though it is sold in 04, the vehicle is still a 05.The manufacturers have been doing this for a LOOOOONG time. :rolleyes:

The 04 vehicles are srart build in summer of 03 and usually stopped in the spring of 04.
 

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the 04.5 have the same front end as those half tons u owend and the 05 has the big front hood that is a quick way to tell
 

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yeah what he said
 

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Discussion Starter · #13 ·
Thanks guys:drink
 
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