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THE SILVER BULLET
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280 Posts
Discussion Starter #1
I have a PS6.0, so I am here on behalf of a friend that owns a 2004 duramax. He is having white smoke at idle and light throttle issue and asked me to look at it. I noted here this seems to be a common issue with LB7 injectors, but I noticed in 2004 the duramax went to the LLY engine.

How can I ID the engine he has?
Will GM perform the injector warranty work even though a tuner was once installed?

Thanks,
Rick
 

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Senior Member
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3,939 Posts
Look at the 8th digit in the VIN. 1=LB7, 2=LLY

As for the tuner, its best to return the vehicle to stock before dealer visits.
 

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Senior Member
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1,709 Posts
:whs

I couldn't have said it better.
 
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