Chevrolet automatic transmission input shaft speed sensor
The Automatic Transmission Input Speed Sensor is a device that measures the rotational speed of the automatic transmission input shaft and transmits this information to the transmission control module (TCM).
Sensor location
The location of the sensor can vary depending on the model and year of the vehicle, but it is usually located in the transmission housing, near the input shaft.
Sensor functions
The input shaft speed sensor performs the following functions:
* Measures the rotation speed of the automatic transmission input shaft.
* Sends speed data to TCM.
* Helps the TCM determine proper shift timing and control the transmission hydraulic system.
Signs of sensor malfunction
A faulty input shaft speed sensor can cause a variety of problems, including:
* Shock or hesitation when shifting gears.
* Slippage or delay in gear shifting.
* Errors in the transmission control system.
* Transmission fluid leaks.
Diagnostics and replacement of the sensor
Diagnosis of a faulty input shaft speed sensor can be done using a trouble code scanner. If an error code appears indicating that the sensor is faulty, it must be replaced.
Replacing the sensor usually involves the following steps:
1. Disconnecting the negative terminal of the battery.
2. Removing the automatic transmission pan.
3. Disconnect the sensor connector and remove the sensor from the gearbox.
4. Install the new sensor and tighten it with the proper torque.
5. Installing the automatic transmission pan in place.
6. Connecting the negative terminal of the battery.
Please note that the exact steps to replace the sensor may vary depending on the model and year of your vehicle. It is recommended that you consult the repair manual for your specific vehicle or seek assistance from a qualified mechanic.