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Transmission control sensor an gear ratio incorrect codes

Tiny
BARNEY90
  • MEMBER
  • 2006 CHEVROLET SILVERADO
  • 6.6L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 167,000 MILES
I have a 2006 duramax with the 6 speed auto allison transmission.
We have replaced the transmission control sensor already but when I'm driving
It will act like the transmission is slipping and the check engine light come on the codes
That come up are p0700 and p0735? I can reset them and it runs fine for a few miles then
Dose it again but the light don't come on everytime?
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Saturday, November 28th, 2015 AT 6:34 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I would start by changing the oil/filter in the trans and inspect the wire harness inside the trans very carefully. It is a common failure

Roy
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Sunday, November 29th, 2015 AT 6:40 AM
Tiny
BARNEY90
  • MEMBER
  • 1 POST
Ok thank you. I've been told it's the wiring harness. Another? Is if the harness is bad will there be transmission fluid in the plug coming out of the transmission?
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Sunday, November 29th, 2015 AT 3:33 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Yes, that is correct

Roy
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Sunday, November 29th, 2015 AT 3:34 PM

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