allison optional?? - Chevy and GMC Duramax Diesel Forum

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post #1 of 15 (permalink) Old 11-11-2012, 07:01 PM Thread Starter
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allison optional??

my friend and i are in a debate about whether or not the allison was an option or in 100% of all duramax's in 2003/2004. He thinks they were optional and i was under the impression that they ALL came with allisons. can someone please help clear this issue up?





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post #2 of 15 (permalink) Old 11-11-2012, 07:05 PM
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if it is an auto trans behind a duramax in a chevy/gmc 2500/3500 series truck then yes it is a Allison 1000 5 speed.

if it is a manual trans it is a ZF6. Only two trans available

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post #3 of 15 (permalink) Old 11-11-2012, 07:07 PM
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Allison is the only automatic trans offered behind the Duramax In trucks

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post #4 of 15 (permalink) Old 11-11-2012, 07:09 PM Thread Starter
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perfect... thanks for the info =... but my next question is what year did they make the 6speed? i thought late 2005 or in 06





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post #5 of 15 (permalink) Old 11-11-2012, 07:12 PM
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Quote:
Originally Posted by wheelie-king View Post
perfect... Thanks for the info =... But my next question is what year did they make the 6speed? I thought late 2005 or in 06
2006/LBZ, some were LLY or LLZ if you will were the first of the 6 speeds

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post #6 of 15 (permalink) Old 11-11-2012, 07:37 PM
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The dmax vans had a 4L80e I thought.


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post #7 of 15 (permalink) Old 11-11-2012, 07:40 PM
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UPDATE: no one gives a shit about vans






/jk lulz. yes they didn't have the allison. but like I said the relevance of duramax vans to this forum or the average citizen is very low. no offense Stepchild.

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post #8 of 15 (permalink) Old 11-11-2012, 07:40 PM
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They do. but he said trucks..
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post #9 of 15 (permalink) Old 11-11-2012, 07:51 PM
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Quote:
Originally Posted by wheelie-king View Post
my friend and i are in a debate about whether or not the allison was an option....
The invoice listed the auto (allison) as a $2k option vs manual.

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post #10 of 15 (permalink) Old 11-11-2012, 07:56 PM
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Quote:
Originally Posted by The S.O.M. View Post
Allison is the only automatic trans offered behind the Duramax In trucks
fixed that...a zf6 manual was available until 06 iirc, and the vans came with 4l85e's and 6l85e's.

or is it 4l80?? and 6l80?? not positive on the code lettering..

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