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Old 07-17-2019, 03:03 PM   #1
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Default Head gasket change

Just had the head gasket repair done on my 2006 ,3600. Did the gasket as well as
having the injectors remand & new glow plugs installed
Now a problem with the shift pattern it does not shift up or shift down when passing
My questions is does the trans have to relearn a shift pattern after the head removed or the battery disconnected?
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Old 07-17-2019, 03:07 PM   #2
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Default Re: Head gasket change

does it feel like you're lacking a bit of power? perhaps you're in some kind of soft limp mode which given all the work is a possibility (perhaps a small boost leak). any codes (pending/current or stored)?

no.. the trans does not need to relearn after this kind of job.
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Old 07-17-2019, 05:28 PM   #3
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Default Re: Head gasket change

Assuming you have good engine power, you may need a trans reteach. You can have someone with a compatible bi-directional scanner clear the adaptations. Then it will relearn of the next few hours. Make sure to drive for at least 20 minutes after the reset.

Not that this is different than initiating a manual adaptation, which requires a specific drive cycle following.
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Old 07-17-2019, 05:37 PM   #4
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Default Re: Head gasket change

It might be helpful to use a scan tool capable of live data. You can then monitor things like boost pressures and transmission operation.

Going with the last thing done...
Double check that all of the electrical connectors are properly seated. Some take a bit of force to seat home.

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