2012 6R80 harsh engagement in drive

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smftnt
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2012 6R80 harsh engagement in drive

Post by smftnt » Thu Feb 06, 2020 12:51 pm

Harsh engagment in drive everytime. intermittent harsh downshift. no high gears at time.

ifound the O/D clutches burned up, fliter plugged bad. as far as the harsh engagement problem in drive, i was thinking, epc solenoid, or pcm is commanding high line pressure due to overdrive clutch burn up. what do you guys think?? ,
Last edited by smftnt on Fri Feb 07, 2020 10:05 am, edited 1 time in total.

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dhritsko
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Re: 2012 6R80 harsh engagement in drive

Post by dhritsko » Fri Feb 07, 2020 9:04 am

The first thing I would do is update to latest programming for the vehicle , these vehicles have had several updates
Dave Hritsko
Transtar Industries
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smftnt
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Re: 2012 6R80 harsh engagement in drive

Post by smftnt » Fri Feb 07, 2020 10:07 am

Thank you David! That was already done before they removed trans.

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dhritsko
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Re: 2012 6R80 harsh engagement in drive

Post by dhritsko » Fri Feb 07, 2020 10:55 am

if you have rubber accumulators in the VB were they good ?
Dave Hritsko
Transtar Industries
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smftnt
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Re: 2012 6R80 harsh engagement in drive

Post by smftnt » Sat Feb 08, 2020 1:29 pm

I replaced them (installed a zip kit)

smftnt
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Re: 2012 6R80 harsh engagement in drive

Post by smftnt » Mon Feb 10, 2020 9:48 pm

What exact amperage reading should I have in the LPC wire (line pressure solenoid) under normal circumstances? I can't find an amperage chart.

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dhritsko
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Re: 2012 6R80 harsh engagement in drive

Post by dhritsko » Tue Feb 11, 2020 9:26 am

6R80 solenoid.PNG
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Dave Hritsko
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smftnt
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Re: 2012 6R80 harsh engagement in drive

Post by smftnt » Tue Feb 11, 2020 10:59 am

Thank you David! Although that does not answer my question

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dhritsko
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Re: 2012 6R80 harsh engagement in drive

Post by dhritsko » Tue Feb 11, 2020 11:20 am

best I was able to find
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