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  1. G

    Intermitten Check Engine Light

    2006 LBZ every week or so I get the check engine light. Cruise wont work when its on. I let it set a couple of hours and its gone...plan to have it scanned this weekend but any ideas so far? thanks
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    LBZ: Fuel additives

    looking for feedback on fuel additives...I used to have a Cummins and I used Walmart 2 cycle oil additive, which worked real well. I still have not used any thing in my 2006 LBZ but I would like to post the question on if you use it and what you use thanks
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    How to tell the difference.

    Here is my new ride only 97k miles
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    How to tell the difference.

    thank you
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    How to tell the difference.

    is this a picture from the top of a 2005 lly or a 2006 lly/lbz? thanks
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    How to tell the difference.

    so the FICM is on valve cover even on the 2006 LLY with Allison that is the fisrt version of the LBZ use from 8/05 thru 11/05?
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    How to tell the difference.

  8. G

    How to tell the difference.

    I have found a 2006 GMC 2500HD (manufactured 8/05) how can i raise the hood and quickly tell if its an old LLY like in the 05 or the LLY that was built for 3 months that was a detuned LBZ that was used going forward? It has engine code 2 and has the Allison transmission. All points to the...
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