Engine runs, but vehicle does not move in any gear

Probable cause(s)

1. Low ATF level
2. Shift cable broken or out of adjustment
3. Joint in shift cable and transmission or body worn
4. ATF pump worn or binding
5. Regulator valve stuck or spring worn
6. ATF strainer clogged
7. Mainshaft worn or damaged
8. Final gears worn or damaged
9. Transmission-to-engine assembly error
10. Axle disengaged

Notes

- Check the ATF level, and check the ATF cooler lines for leakage and loose connections. If necessary, flush the ATF cooler lines.
- Check for a loose shift cable at the shift lever and the transmission control shaft.
- Improper alignment of ATF pump and torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.
- Check the line pressure.
- Be careful not to damage the torque converter housing when replacing the main ball bearing. You may also damage the ATF pump when you torque down the main valve body. This will result in ATF pump seizure if not detected. Use the proper tools.
- Install the main seal flush with the torque converter housing. If you push it into the torque converter housing until it bottoms out, it will block the fluid return passage and result in damage.
- Check the ATF strainer for debris. If the ATF strainer is clogged with particles of steel or aluminum, inspect the ATF pump. If the ATF pump is OK, find the damaged components that caused debris. If no cause for contamination is found, replace the torque converter.
- Inspect the differential pinion shaft for wear under the pinion gears. If the differential pinion shaft is worn, overhaul the differential assembly, replace the ATF strainer, thoroughly clean the transmission, and flush the torque converter, cooler, and lines.