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Allison OEM Discuss repairing & maintaining an OEM Allison automatic transmission.

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Old 05-29-2019, 08:44 PM   #1 (permalink)
1LTREATR
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New to LBZ. 6 speed questions.

Hey everyone, Ive been driving the 06 in my sig for about 2 months now. Itís got an exhaust and thatís it but the EGR will be deleted soon enough. Bought it with 110k miles on it and no rust which isnít very common around here (Ohio). Front wheel bearings have been replaced, trans cooler lines were replaced at least once, front end was tight except for the pitman arm, and the brake lines to the rear were in good shape but the fronts are a little worse. No codes or stored codes. Anyway, I had a 02 LB7 and Iíve been putting around in my 97 12 valve as of late and wanted to know if maybe Iím just not used to the 6 speed in this truck or what. Iíve noticed a few times when Iím slowing down almost to a stop then start to accelerate again the truck almost seems to hesitate or like it was searching for a gear if that makes sense? I think it just down shifts to second. A guy was riding me pretty good on my way home from work today so I laid into the throttle about 75% then had to slow down pretty quickly and came to a complete stop very briefly. When I went to accelerate this time the same the same slop happened. No engine lights or anything. Fluid looks good but Iíll probably change it and the filters anyways. Is this kind of thing normal? Iím planning on taking the truck to Jeff Deans shop as I wanted him to use his EFI live and make sure the truck doesnít have a tune in it even though the dealership assured me that it didnít (again probably just not used to the power coming from a 12 valve). Doesnít do it all the time and Iím probably just super paranoid because all Iíve done for months before buying the truck is read about LBZ problems on a couple forums. Thanks for the input.

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Old 05-29-2019, 09:31 PM   #2 (permalink)
OkDually
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Old 05-29-2019, 09:42 PM   #3 (permalink)
johnH123
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My dads '12 6.0 vortec does that same thing. I think it must be a 6 speed thing.
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Old 05-30-2019, 01:01 AM   #4 (permalink)
davester
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totally different 6-speeds, both physically and programming-wise.
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Old 05-30-2019, 09:54 AM   #5 (permalink)
Rvn4me
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Fuel filter changed. If not a good EFILive tune will take care of the OEM sloppy throttle.

Last edited by Rvn4me; 05-30-2019 at 09:56 AM.
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Old 05-30-2019, 11:01 AM   #6 (permalink)
1LTREATR
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That’s for the ideas. Fuel filter and oil were the first things I changed when I got it. I’m pretty sure through my searching I’ve read about “updates” for the 6 speed? It doesn’t really bother me as long as everything is as it should be. I’m not going to tune this one, I just want it to last me a long time. Between this and the 12 valve I shouldn’t need another vehicle for a while hopefully.
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