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Old April 16th, 2006, 06:08 PM   #1
mschaffer66
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Default Duramax/Allison Question

As some of you might know I haven't been driving my truck the past 4 months or so as the woman has been driving it to save miles on her lease.

Well today when coming home from up north I went to pass someone and when i put my foot into it it would rev up a bit, then eventhough i was holding it down the RPM's didn't increase and neither did my speed...just like it was being governed out. I did it a few more times later and it did almost the same thing. Its like it didn't want to upshift.

I also tried it a few times from a dead stop, it would do the 1-2 shift and maybe the 2-3 and it would just sit there and hold the gear without allowing my speed to really increase(it was just barely inching higher), then after 5-10 seconds it would shift and it would pull hard just like it usually does.

Has anyone else had this problem before? Does anyone know about it?
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Old April 16th, 2006, 06:13 PM   #2
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sounds like a flash issue. have you had it to the dealer for this problem yet? if not theres a new flash for your trans controler waiting
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Old April 16th, 2006, 06:20 PM   #3
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Nope I haven't. About a year ago I had it in and they replaced the trans module.

So are you saying if i call up service tommorow they should understand whats going on and make it a quick in and out?

Do they charge you to flash you...hehe...or is it like a warranty/recall thing?
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Old April 16th, 2006, 07:36 PM   #4
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there was tons of TSBs on the allison trans for malfunctions in the controller. if its under a tsb it should be free to you.
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Old April 16th, 2006, 07:38 PM   #5
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by the way I had a trans at 4400 miles and three controllers in by the time I had 22,000 miles on my`01 allison
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Old April 16th, 2006, 07:55 PM   #6
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I guess I should feel lucky that mine has made it to nearly 90k with minimal problems.

Oh well at 107k my warranty is up and I'm going to start modding it a bit. If the Allison goes after that I'll get an ATS or something for it.
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Old April 19th, 2006, 08:50 AM   #7
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I can search this issue for you if you like. PM me, I will need a little more info.

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Old April 19th, 2006, 06:10 PM   #8
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Yep have it flshed and then have her drive it like you. It is OBDII and it does learn driving styles. But I would have it checked out none the less.
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Old April 20th, 2006, 07:18 AM   #9
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Quote:
Originally Posted by mschaffer66
Oh well at 107k my warranty is up and I'm going to start modding it a bit. If the Allison goes after that I'll get an ATS or something for it.
www.dieselplace.com for all of your answers

mine did some things like what you described a while ago, i think i had an egr code and a tranny code. i have an LLY engine though

i'd recommend a suncoast level 3 or 4, IMO ATS is overpriced
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Old April 20th, 2006, 04:09 PM   #10
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Yep have it flshed and then have her drive it like you. It is OBDII and it does learn driving styles. But I would have it checked out none the less.
He doesnt know how I drive it when he's not around. :tonka:
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Old May 1st, 2006, 08:38 PM   #11
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Hey man, i'm glad to see you bought a Dmax! Check out www.dieselplace.com for all the answers. I am "APEXrtx" on there.

ATS has some excellent products but so does suncoast. When the time come for my upgrade I'll probably go with the suncoast.
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Old May 4th, 2006, 10:00 AM   #12
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Y'all shoulda bought a Dodge. ;)
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Old May 4th, 2006, 10:04 AM   #13
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The truck is running fine. It seems that it might have changed it's shift points because our driving styles are drastically different.. or something like that. :tonka:
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Old May 4th, 2006, 08:12 PM   #14
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Y'all shoulda bought a Dodge. ;)

lol.....rrrriiiigggghhhtttt
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Old May 8th, 2006, 08:15 AM   #15
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Originally Posted by kerryann
The truck is running fine. It seems that it might have changed it's shift points because our driving styles are drastically different.. or something like that. :tonka:
Actually I found out that its not running right today when I almost met Jesus. That darned shifting this is kind of important when you need to get moving.
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Old May 8th, 2006, 08:36 AM   #16
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if you get a programmer like a predator or the like (not a box) you can read/clear codes along with having the power to got moving quickly... just some food for thought... :tonka:
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