My transmission shifts hard why?

2007 CHEVROLET SILVERADO
107,000 MILES • 6.0L • V8 • 4WD • AUTOMATIC
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KATIE1015
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  • 1 POST
I can drive the truck and it runs fine. After twenty minutes or so when taking off the truck shifts hard into first and second and third. But i can shut the vehicle off for three to five minutes and it will no longer do it. I was told it is the torque converter but i do not feel like it is. I have replaced the filter and fluid with no change.
May 25, 2019 at 8:57 AM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,181 POSTS
It is not the torque converter, it sounds like you have a pressure control solenoid that has a broken spring. here is the location so you can replace it. If the transmission needs to come out. here is a video to help walk you through the steps with the instructions on how to fix the problem below:

https://youtu.be/3vJAojsrfuU

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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May 26, 2019 at 2:14 PM
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RICK SCOTT
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Why is transmission shifting hard ?
May 6, 2021 at 11:06 AM (Merged)
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
It could be several things. Make sure the trans fluid is clean and full. If the check engine light is on, have the computer scanned for possible trouble codes. As far as the hard shift, it could be shift solenoids, the governor.

You could have a clogged catalytic converter as well here are two guide to help us fix the problem.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

and

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

Please run down these guides and report back.


May 6, 2021 at 11:06 AM (Merged)