TrailBlazer 4WD L6-4.2L VIN S (2002)
3. Properly align the keyway of the rotary position sensor with the motor/encoder shaft as indicated by the center reference line shown in the graphic.
4. Ensure that the hex on the rotary position sensor (2) fits in the hex of the motor/encoder housing (3).
5. Install the washer and snap ring retaining the motor/encoder rotary position sensor.
6. Install the motor/encoder gasket (1).