Newbie from Texas

R

retcap201

New member
Sep 22, 2010
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Round Rock, Texas
I am new to the Duramax Diesel. I have had a Dodge Cummins for several years and it was recently totaled by a flood.

I do not know anything about the Duramax and will probably be asking some pretty stupid questions.

I have purchased a 2004 Chev 2500 Duramax with an Allison auto tranny.

For the first of the stupid questions.....I would like to know which engine I have, I have seen you guys talking about LLB LLY? Where do you find this information? My truck came with no owner's manual and I have not been able to find the LLB or LLY on the truck.....Thanks

Dwayne
 
emiller3

emiller3

He's Back
Feb 21, 2009
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36
42
lake charles,LA.
One way you could tell is from the injectors. If they are under the valve covers it is a lb7 .if the top half is exposed then it is a lly . Probably other ways go tell but this is one way.
 
1953drtelco

1953drtelco

Member
Feb 24, 2010
223
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16
Riverside, CA
The only item to be watching are the injectors, but my buddy has over 100K on the stock injectors without any problems, been using Opti-Lube XPD fuel treatment for quite a few years.
 
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