Clueless! Transmission won't engage!
 

2001 santa fe 4wd 2.7L
Driving fine, out of no where lost momentum, engine was going but the wheels got no power. Now in D, R, 1, 2 all act like its in Neutral.
Pick up codes P0755 P0760 P0765 - Solenoids open/short or malfunction

Tried the following:

• -Tranny fluid looks/smells fine
• -Checked for opens/shorts at the solenoids, at all harnesses in between, found no abnormalities resistance readings in spec = 3.2ohms each
• -Checked A/T control relay - works fine
• -Checked ATM fuse - works fine
• -Checked vehicle speed sensor, tested according to service manual only pulsed twice so replaced it with a new one, didnt solve the problem

The only thing I haven't tested in the TCM and torque converter
No clue what to do..
Has this happened to anyone else ? Any help is better than none
Thanks :)

The only problem I ever had was when my wife was driving the vehicle she said it would get up to only about 30 MPH and then the RPM's would go through the roof. I checked it out and after taking the engine cover off found that some squirrels had eaten some of the harness. Had it repaired and it was back to normal. Good luck. Hope it's something as simple as that.

John