Transmission not shifting properly?

210,000 MILES • 4.2L • AUTOMATIC
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LAWRENCE16
  • MEMBER
  • 1 POST
I replaced my shift solenoid b and c but I'm still having problems shifting and my transmission is automatic.
May 7, 2023 at 12:13 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,690 POSTS
I would start by checking the codes this guide can help:

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

This guide can help as well:

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

Make sure the transmission is full of fluid and if so with no codes I would replace the input shaft speed sensor which can cause the problem of the transmission not shifting. Check out the images (below). Please let us know what happens.


May 8, 2023 at 5:47 AM
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