Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

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  #1  
Old 04-29-2009, 05:20 PM
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i just got my truck back from gettin the SCIV installed. everything seems ok except the trans temp was hitting 200+. i have never seen it above 180 until today. it was about 80 degrees today. is this anything to worry about?
 
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Old 04-29-2009, 11:24 PM
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the SCIV runs hotter than stock.
 
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Old 04-30-2009, 03:57 PM
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wow... why so hot Danny?
 
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Old 04-30-2009, 06:50 PM
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something bad happened today. driving home from work, got on it a little bit and went into limp mode with the SCIV. it threw a P1721( trim solenoid "b" controlled clutch not engaged). the tranny temp was up to almost 250. anyone got any info on this would very much appreciated. just spent my last dollar on a new tranny and its messin up. not good
 
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Old 05-01-2009, 12:09 AM
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take it back to where you got it built at, something is not right.

its running way to hot, could be clogged filters or worse, change the spin on filter and make sure u swap the onto the new one. and cut open the old one to see of its dirty.

or take it back to where you got it built at and let them deal with it.
 
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Old 05-02-2009, 06:01 PM
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solenoid sticking.

Could be as simple as electrical connect. Trash in valve body. Like stated before, plugged filters, etc.

Temps are higher than normal. I have a stage 4 my temps are around 190 right now. If you drive normal, temps usually are around 100 degrees over ambient temp. (w/out upgraded cooler)

The tranny shop needs to fix this.

Did you, the trans shop, or anyone reset the taps?
 
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Old 05-03-2009, 06:22 PM
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The tranny shop needs to fix this.

Did you, the trans shop, or anyone reset the taps?


no not that im aware of. he wants me to bring it in to hook up a tech II and fast relearn it. iv heard you can do it in the scan tool part of efi but i dont know how. anyone know?
 
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Old 05-03-2009, 08:01 PM
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Originally Posted by dhardy1357
The tranny shop needs to fix this.

Did you, the trans shop, or anyone reset the taps?


no not that im aware of. he wants me to bring it in to hook up a tech II and fast relearn it. iv heard you can do it in the scan tool part of efi but i dont know how. anyone know?

when u flash a tune in the ecm there is an option to reset the taps on the box tha comes up
 
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Old 05-06-2009, 05:46 PM
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Right before the "agreement". Click at the top, the other box, I think its says Taps. You dont have to log onto the Allison controller to do this.
 




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