A shift control solenoid is a computer-controlled hydraulic valve that is used to command a gear change in an automatic transmission.
Symptoms of Wear or Failure
- Illumination of the Check Engine Light
- Automatic transmission does not shift correctly
Related Repair Advice
- Improper diagnoses of wiring and sensors can lead to unnecessary replacement of shift solenoids
- Failure to service the transmission at the recommend intervals can lead to sticking shift solenoids and erratic shifting
- When replacing a shift solenoid, its related wiring should always be thoroughly inspected
- Some transmissions allow for replacement of individual solenoids while others require replacement of all shift solenoids as an assembly