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Transmission will not Move in any gear after it warms up

Tiny
CLAMPITT
  • MEMBER
  • 2001 GMC SIERRA
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 178,000 MILES
When the transmission is cold, it will go into gear, forward and reverse. After it warms up, it will not move in any gear, rpm's are up, vehicle not move. The electronic four wheel drive activates as you can hear the solenoids click. Fluid level is good. What sensor and where is it at that needs replacing?
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Friday, November 9th, 2018 AT 11:21 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

There are no sensors for application going into gear. that is mechanical.

I would drop the transmission pan and inspect the filter for being clogged for debris. That may be the whole issue.

If that does not do it, then you have an internal failure.

Roy

https://www.2carpros.com/articles/automatic-transmission-problems

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission
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Friday, November 9th, 2018 AT 1:02 PM

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