Shift Timing/Erratic or Hunting

SHIFT TIMING/ERRATIC OR HUNTING
1. Powertrain control system electrical inputs and outputs, wiring harnesses, Powertrain Control Module (PCM), shift solenoid No. 1, and transmission range sensor.
2. Transaxle fluid level low or contaminated.
3. Speedometer drive gear or driven gear damaged or missing.
4. Faulty main control valve body.