Hello,
So, have you scanned the vehicle to see what code(s) you are getting?
If not, that will be a good first step. As that can help with the diagnostics. This issue could be due to any number of sensors or components.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
And from your question it sounds like the transmission shifts normal up to 50 MPH then it has issues?
What else are you experiencing?
Please let me know.
Thank you.
Jan 12, 2022 at 10:12 AM