Transmission Position Sensor/Switch: Service and Repair

4R70E/4R75E

Digital Transmission Range (TR) Sensor













Removal

1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury Procedures.
With the vehicle in NEUTRAL, position it on a hoist.

2. Disconnect the selector lever cable.





3. Disconnect the Transmission Range (TR) sensor connector.





4. Remove the bolts and remove the TR sensor.





Installation

1. Install the TR sensor and loosely install the bolts.





2. NOTE: The manual control lever must be in the NEUTRAL position.
Using the TR Sensor Alignment Gauge, align the TR sensor slots. The TR Sensor Alignment Gauge is designed to fit snugly.





3. NOTICE: Tightening one screw before tightening the other may cause the Transmission Range (TR) sensor to bind or become damaged.

Tighten the screws in an alternating sequence.

- Tighten to 9 Nm (80 lb-in).





4. With the manual lever in the (D) position, connect the selector lever cable.
- Tighten to 30 Nm (22 lb-ft).





5. Connect the TR sensor electrical connector.





6. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury Procedures.
If equipped with fire a suppression system, repower the system.