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Old Dec 14, 2017, 12:45 AM
  #91  
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hi , so did updating the tcu to 8631B002_dio30.cff , latest firmware actually solve the grinding issue ? I have just had this grinding noise as well and has been doing some research on how to actually solve this issue but looks like someone mentioned that the grinding sound still happens after updating the software ?

Will get my tuner to have a look on this and update the software.
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Old Dec 15, 2017, 12:01 PM
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Originally Posted by wmsoo View Post
hi , so did updating the tcu to 8631B002_dio30.cff , latest firmware actually solve the grinding issue ? I have just had this grinding noise as well and has been doing some research on how to actually solve this issue but looks like someone mentioned that the grinding sound still happens after updating the software ?

Will get my tuner to have a look on this and update the software.
We've done this update on several vehicles. So far its fixed none of them.
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Old Jan 6, 2018, 10:04 PM
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Originally Posted by Jacks Transmissions View Post
We've done this update on several vehicles. So far its fixed none of them.
Same thing here, i've tried updating to 2012-2015 software, it doesn't make any difference, still grinds but doesn't do it when it's below 40 degrees F on cold start. Does it nearly every time I start it when it's warmer. Still makes the two click noise on startup even when one of the TSBs said it would eliminate that.

I wish it wouldn't make the noise, I hope synchros aren't being worn out every time it does it, because that's what it sounds like.

Oh well, I guess there's nothing you can do unless you get a brand new transmission.
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Old Jan 10, 2018, 10:12 AM
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My advice to you guys is to shift to "N" before starting the engine, in this way the gearbox will do its shift testing but without the grinding noise.


It works for me, I hope it does for you.


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Old Jan 10, 2018, 10:16 AM
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Originally Posted by GeoMitsu View Post
My advice to you guys is to shift to "N" before starting the engine, in this way the gearbox will do its shift testing but without the grinding noise.


It works for me, I hope it does for you.


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Ive tried doing this many times, still makes the noise.
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Old Jan 11, 2018, 12:30 PM
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Originally Posted by harukari View Post
Ive tried doing this many times, still makes the noise.
My tech has found a fix but it requires going into the transmission. So far units that come in grinding leave without grinding.
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Old Jan 11, 2018, 12:32 PM
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Originally Posted by Jacks Transmissions View Post
My tech has found a fix but it requires going into the transmission. So far units that come in grinding leave without grinding.
That makes me really curious as to what is causing the noise.
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Old Jan 12, 2018, 01:44 PM
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Originally Posted by harukari View Post
That makes me really curious as to what is causing the noise.
Sorry, cant give away any details.
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Old Mar 19, 2018, 09:59 PM
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Originally Posted by Jacks Transmissions View Post
My tech has found a fix but it requires going into the transmission. So far units that come in grinding leave without grinding.
hi so you confirmes you have found the fix on this grinding sound ? Confirm its not software issue ? Thanks
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Old Mar 20, 2018, 11:41 AM
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Originally Posted by GeoMitsu View Post
My advice to you guys is to shift to "N" before starting the engine, in this way the gearbox will do its shift testing but without the grinding noise.


It works for me, I hope it does for you.


Regards
Geo
we tested this a while ago (along with tsb etc) on one unit that was only in for the grind with no luck.
we ended up fixing it with the rebuild.
seems it will on some units but others are unaffected by what position they are started in.
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