Erratic shifting at times

[bigboytoy426]

My trans seems to have a mind of its own. Shifting will be fine somedays but then others I can't even stand to drive it. 4-3 downshifts sometimes are extremely hard. On my edge insight I watched it go from 5-4-n-2 then complete stop and lurches forward and downshifts to 1st. Also likes to rev up I between gears sometimes. Resetting the taps seems to work but is it safe to do it multiple times a week or even day? I read reflashing the TCM can help. True? I have a autocal I can try and do that with but where do I get the file? Does the dealership charge for this? Hate to throw money at it with just a guess. I have a fuel filter i will be putting on

 

[S Phinney]

It could be in your tuning or anything like fuel filter, leaking up pipe, boost leak etc. The tranny uses projected values gathered from " learning* to make the next shift. If anything that effects that being replicated causes harsh or erratic shifts.

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[Cknight199]

Could be low fluid. Just sayin are you driving it cold? Or does it do it when at running temp?

 

[bigboytoy426]

Usually it does it when trans is warm. I replaced the Allison filter and it was good for a few months then started acting up again. Ill check fluid but it was all just replaced when my tail housing cracked. For got to add that.

 

[Mike L.]

Usually it does it when trans is warm. I replaced the Allison filter and it was good for a few months then started acting up again. Ill check fluid but it was all just replaced when my tail housing cracked. For got to add that.

Was the tail housing replaced while the trans was still in the truck?

 

[bigboytoy426]

Yup. But then shop claims it doesn't have to be pulled. He supposedly done many without any problems. That was about 2-3 months ago. Today it drove fine

 

[AubleAK]

That's a big no no

 

[bigboytoy426]

What exactly happens when you don't take it out? I would be nice for it to grenande then get a free trans. But we all know that's not how the world works and they would blame it on something else.

 

[AubleAK]

What exactly happens when you don't take it out? I would be nice for it to grenande then get a free trans. But we all know that's not how the world works and they would blame it on something else.

Torrington bearing can fall out of place, etc.. Mike will know.

 

[Balindir]

What exactly happens when you don't take it out? I would be nice for it to grenande then get a free trans. But we all know that's not how the world works and they would blame it on something else.

x2 Not just with mechanics, but everyone now days just needs to own up to there mistakes...

 

[bigboytoy426]

Just traded it in on 07 lbz. To many problems.

 

[04D_MAX]

Just traded it in on 07 lbz. To many problems.

well that's one way to fix it lol congrats on the new truck:thumb: