Hi,
The 720 deals with the vehicle speed sensor (VSS) (see pic 1). I would think that would cause shifting issues, but not sure why it wouldn't go over 20 mph. What happens when you reach 20mph? Does it seem to go into neutral, or does it seem the engine is a likely cause?
If you look below, I attached a few pics related to the P0720 issues. They are the diagnostics for repair. Take a look through them and let me know if you are comfortable doing it. (Pics 2-5)
As far as the other code, if I understand that has been resolved. Let me know if I'm wrong.
Let me know.
Joe
Images (Click to make bigger)
SPONSORED LINKS
Thursday, December 17th, 2020 AT 9:04 PM