Transmission will not shift why?

160,000 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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JIMMY FRANKLIN
  • MEMBER
  • 1 POST
While I am driving the transmission is not shifting can you tell me why?
Sep 29, 2016 at 1:08 AM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
This could be a number of things but the most common thing is a fluid issue. Let's start with checking the fluid level and condition. Here are some guides that will help with this:

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

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Next we need to check for codes to find out if we have any there.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Then we need to more then likely drop the pan and find out if there is metal or clutch debris in the fluid. I attached the info from the manual on how to do this below.

Please run through this info and let us know if you have other questions. Thanks
Jun 23, 2021 at 5:38 AM
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