2. Check the shift solenoid. The shift solenoid is an electrical component that controls the shifting of the gears. Make sure that the shift solenoid is working properly and that it is getting power.
3. Check the transmission fluid level. The transmission fluid is essential for the proper operation of the transmission. Make sure that the transmission fluid level is full and that the fluid is clean.
4. Check the transmission filter. The transmission filter helps to keep the transmission fluid clean. Make sure that the transmission filter is clean and that it is not clogged.
5. Check the transmission gears. If all of the above steps have failed to fix the problem, it is possible that the transmission gears are damaged. This will require the transmission to be disassembled and the gears to be replaced.