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Discussion Starter #1
hi everyone i am Ryan i live in Texas i am new to this place i have a 06 GMC duramax crew cab 4x4 i believe it has LLY as the engine don't know for sure.i bought it at the Chevy dealership i work at. WP_000005 (2).jpg
 

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if it has an LBZ your 8th digit of the vin code will be a "D"

Welcome to the forum!
 

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where you located at in texas?
 

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Discussion Starter #5
thanks pretty awesome truck but i think it has a program still in it because it shift 1-3 slow then shift 4-6 fast pretty weird to me and only thing the tech2 (gm reader) at work says it unknown
 

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Discussion Starter #6
it has a 2 as the 8th digit on the vin i think that it is a LLY i think it's a early 06 they start Lb7 late 06 and Stephen i am north of San Antonio
 

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sweet thats where I'm from. i live in boerne/fair oaks but am going to school in LBK
 

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Discussion Starter #8
that pretty close where i live in blanco/spring branch area
 

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what dealership do you work at?
 

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Discussion Starter #10
i work at valmark in new braunfels
 

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okay i gotcha. yeah i used to work at ancira before i moved for school
 

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Discussion Starter #12
was ancira a pretty good place or not? I was thinking of switching to cavnder chevy but i got this bad ass promotion doing pdi's now driving new cars all day and starting to do hands on with a partner pretty sweet.
 

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yeah. its quite slow. the one thing we needed was another diesel tech there. but yeah i have 2 buddies that work at cavender chevy ones a diesel tech and ones just the oil change guy pretty much
 

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Discussion Starter #14
yeah i bet a lot of people don't like work on the diesel at valmark. got one master tech his the only one the work on duramax's and i am his partner :D
 

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yeah. i would rather work on a duramax over a gasser haha
 

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Discussion Starter #16
haha yeah no kidding
 

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you do have an LLY then. However, the internals are the same as the LBZ, it is just a detuned LBZ in all reality. Once you throw a programmer at it you'll be lbz status :thumb
 

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it has a 2 as the 8th digit on the vin i think that it is a LLY i think it's a early 06 they start Lb7 late 06 and Stephen i am north of San Antonio
Late 06 = lbz :drink

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Discussion Starter #19
when i bought it i went to update all the stuff on the truck throw the gm updater at work all the stuff in the computer say unknown frimware so i think it still has a program in the computer. all i know that truck has balls right now :gearjamin
 

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I would probably ref lash the ecm since you have access to the tools from the dealer. You can never be too careful, and I'm not one for trusting other peoples tunes.
 
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