1995 k2500 transmission

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  #1  
Old 02-02-04, 04:57 PM
tstokka
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1995 k2500 transmission

I'm getting codes 39,81,82,85 tcc stuck off, 2-3 shift solenoid circuit fault, 1-2 shift solenoid circuit fault, and undefined ration error.

these all came up when i noticed that it wasn't shifting properly. I think they are all related. prolly just one component. any ideas?
 
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  #2  
Old 02-02-04, 10:33 PM
mike from nj
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i know 'undefined ratio error' is not a good sign, it usually means something is slipping. i've also seen bad solenoids that 'fail' (low resistance) take out the TCM.


wait for davo to reply, he would know.
 
  #3  
Old 02-03-04, 05:05 PM
tstokka
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took it to ammco, they took it for a test run and verified the codes. He then erased codes and it worked fine, couldn't get the codes to reset. The truck was running in fault mode and max speed was 45 @ 3000 rpms. Will keep you posted if it happens again. Whoever said ammco sucked never went to the mason city, IA one.
 
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