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Old 11-14-2016, 10:40 AM   #1
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Allison 2000/3000 Unlocking 6th gear?

Mornin' Everyone,

I just bought a Bluebird with an MD3060 that is set up as a 5 speed. I have done my research and come to the conclusion that no Allison dealer is going to unlock it for me.

I did a bit of poking around and found an "evaluation" version of the Allison software.

If I was in possession of a working version of the Allison service tool do we have anyone here that is adept in its use?

Just because I have scrubs and a scalpel does not make me a brain surgeon.....

I would be not be willing to make programming changes without some qualified direction.

While typing this I had a thought. If I can get a version working on an inexpensive laptop and picked up the interface cable, I could ship it, on loan, to board members in need to do any programming that they needed.

What do you all think?

S.
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Old 11-14-2016, 11:06 AM   #2
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Quote:
Originally Posted by PNW_Steve View Post
Mornin' Everyone,

I just bought a Bluebird with an MD3060 that is set up as a 5 speed. I have done my research and come to the conclusion that no Allison dealer is going to unlock it for me.
PCS got in touch with Allison Transmissions, explained what he wanted and how he was using the same transmission in his bus, and got a letter from the the manufacturer authorizing 6th gear's unlocking.

That's the only way, AFAIK, that an Allison dealer will unlock 6th on a bus
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Old 11-14-2016, 11:19 AM   #3
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im thinking an IHC dealer can do it too.. I know they can and do work on allison.. at least the Rush truck center in Columbus Ohio does Navistar and allison.. perhaps they are a dealer for both... I dot know if Rush in every city is the navistar and allison dealer or not..

ie been in contact with rush in columbs talking about arious IHC software pieces / subscriptions and the possibility of Horsepower re-rating on the Navistar 'E' engines...

-Christopher
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Old 11-14-2016, 03:56 PM   #4
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Quote:
Originally Posted by Scooternj View Post
PCS got in touch with Allison Transmissions, explained what he wanted and how he was using the same transmission in his bus, and got a letter from the the manufacturer authorizing 6th gear's unlocking.

That's the only way, AFAIK, that an Allison dealer will unlock 6th on a bus
Interesting...

I have come across a couple of accounts of folks who had tried the same and were told no. I guess that there is still hope.

Maybe we can get PCS to share his experience and maybe give us some tips on successfully navigating this process.
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Old 11-14-2016, 04:15 PM   #5
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Over on the medium duty truck side of world, I've read folks were able to get 6th gear added by using the wrong VIN (of a truck with a six speed) and having the trans reflashed.

If there's a version of your bus/powertrain that has 6 speeds, that might be possible. Does require someone at a dealer willing to overlook the real VIN, but that doesn't seem too hard.

Google "6 speed update for Chevrolet C4500" or something like that to find out more.
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Old 11-14-2016, 05:25 PM   #6
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Our local diesel shop will reprogram Allison modules for $500... just to get them to work with an exhaust retarder. I didn't bother asking them about the sixth gear.
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Old 11-14-2016, 05:44 PM   #7
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Search the forum for member "Porkchop sandwich". He successfully had his done--and gives a full rundown of what it took.
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Old 11-14-2016, 05:55 PM   #8
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Originally Posted by sdwarf36 View Post
Search the forum for member "Porkchop sandwich". He successfully had his done--and gives a full rundown of what it took.
Ummm...... not exactly. His actual name is "porkchopsandwiches". I'm still looking for the post.

EDIT: Found it!
http://www.skoolie.net/forums/f11/sm...html#post86821
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Old 11-15-2016, 01:11 AM   #9
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The "evaluation" software you found is probably only for diagnostics. I got neck-deep into an interface cable, software, etc and ultimately learned Allison keeps the transmission flashes real close. From what I could tell, the calibrations are produced at Allison specifically for each transmission and will install only on that transmission. Further, it seemed that access to the software for doing the programming required a live internet connection and successful login with Allison. The calibration could be downloaded to the local computer but would expire within a week... The details are growing fuzzy now, but that's roughly what I recall.

I have yet to figure out how to penetrate the wall of OEM approval. Seems to me that there must be some point at which we declare that the vehicle I have is not the vehicle the OEM produced, and it no longer makes any sense to consult them about it at all. I haven't tried pursuing that line with my local Allison shop yet.. something like "it was produced with a powertrain and running gear that came together in a Blue Bird factory, but there's really not much Blue Bird left in it. Let's say I'm the manufacturer now."

Otherwise, do I really have to go through the formality of physically swapping the trans for a new or reman??
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Old 11-15-2016, 02:42 AM   #10
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This is a fun thread
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