LB7 Performance Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines Related To Performance And Longevity

shifting different

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Old Apr 16, 2010 | 04:59 AM
  #1  
03blacksmokejunkie's Avatar
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From: Plainfield Iowa
Default shifting different

before i deployed i was driving around and i went to get on it and before then my truck shifted from 1st to 2nd at about 2300rpm and ever since its been shifting at around 2800rpm! what could be causing this!? iv got my power pup set on stage 3 but its been there for almost 3 years before it started acting up. iv taken it to 3 tranny shops and they cant figure it out either! got any idea of what it could be?!?! i need it fixed!! IM COMING HOME!!!!
 
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Old Sep 30, 2010 | 07:28 PM
  #2  
02DURAMAX's Avatar
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From: oceanside ca
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my 02 when i get on it shifts at 2900-3200 if im stock or chipped so i dont think its to much to worry about. Never had much trouble with it.
 
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Old Sep 30, 2010 | 08:19 PM
  #3  
DuramaxDiesel02's Avatar
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From: Flushing,MI
Default Re: shifting different

What are your tranny temps?
Compare then and see if the rpms and consistent with the temp.

Ex,shifts at 3800rpm at 210°
But then 3100 at 180°
see what I mean?

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Old Sep 30, 2010 | 08:29 PM
  #4  
wildbill's Avatar
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From: Billlings, MT
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Originally Posted by DuramaxDiesel02
What are your tranny temps?
Compare then and see if the rpms and consistent with the temp.

Ex,shifts at 3800rpm at 210°
But then 3100 at 180°
see what I mean?

Sent from my Droid

Make it simpler, he's trying to say your transmission might be going. Check the fluid, make sure it isn't deep red in color and doesn't smell burnt.
 
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Old Sep 30, 2010 | 09:11 PM
  #5  
DuramaxDiesel02's Avatar
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From: Flushing,MI
Default Re: shifting different

Originally Posted by RAM CR 24V
Make it simpler, he's trying to say your transmission might be going. Check the fluid, make sure it isn't deep red in color and doesn't smell burnt.





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Old Sep 30, 2010 | 09:13 PM
  #6  
tiremann9669's Avatar
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Joined: Mar 2010
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From: Dansville NY
Default

Was the tow haul switch on possibly ?
 
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