Duramax Diesels Forum Truck of the Week
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Old 12-01-2016, 10:58 AM
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Default How to identify a Allison / 5 or 6 speed.

Looking to buy a "core" six speed Allison, to build, then just swap mine out.

Does the absence of an external NSBU switch definately ID the trans as a six speed?

I tried using the serial number, without any luck.





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Old 12-01-2016, 11:11 AM
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If you can pull the pan and see the nsbu inside its a 6speed.. Judging on the pic that's a 6 speed but someone could have pulled the nsbu I guess..
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Old 12-01-2016, 11:16 AM
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I've never seen a printed serial number tag on a 5 speed. All the 5 speeds I've seen had stamped serial number tags.

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Old 12-01-2016, 11:52 AM
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Looks to be a 2007 according to the part number and the Julian date looks like 7/19/06
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Old 12-01-2016, 11:54 AM
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If you get a trans out of a 2006/2007 Kodiak they have 6th gear but its been locked out by the TCU so its never been used. FYI
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Old 12-01-2016, 12:09 PM
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Looks like it was bult Nov 19 2006
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Old 12-01-2016, 12:29 PM
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The dates don't go in order like you would think. I first thought November too.
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Old 12-01-2016, 02:04 PM
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Bellhousing speed sensor?


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Old 12-01-2016, 02:28 PM
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Quote:
Originally Posted by Awenta View Post
Bellhousing speed sensor?


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Picture indicates it's an LBZ. Has an engine speed sensor.
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Old 12-02-2016, 03:10 AM
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Thanks everyone. I'll go ahead and pick it up.
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Old 12-02-2016, 07:00 AM
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What sped sensor are you guys referring to .?

036.6turbo, mind telling us how much you're paying for it.?
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Old 12-02-2016, 07:25 AM
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Quote:
Originally Posted by c20elephant View Post
What sped sensor are you guys referring to .?

036.6turbo, mind telling us how much you're paying for it.?
The one in the bellhousing
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Old 12-02-2016, 08:08 AM
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Quote:
Originally Posted by Bdirtymax View Post
The one in the bellhousing
I have a 5 speed in the garage that has one, it was eliminated on the LMM 6 speeds
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Old 12-02-2016, 08:24 AM
036.6turbo 036.6turbo is online now
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Quote:
Originally Posted by c20elephant View Post
what sped sensor are you guys referring to .?

036.6turbo, mind telling us how much you're paying for it.?
$350.00
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2003 GMC Sierra CCSB.
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2015.5 Denali. Dmax Allison, under construction.
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  #15  
Old 02-19-2017, 06:38 PM
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Can anyone tell if this transmission is a 6 speed? it came out of a MD truck.
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