K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Transmission Position Switch/Sensor: Service and Repair
Allison - Automatic Transmission
Park/Neutral Position Switch Replacement
Removal Procedure
Caution: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the external wiring harness from the PNP switch.
2. Disconnect the shift linkage/cable from the shift lever (2) on the selector shaft (4).
3. Use wrench (1) to prevent the shift lever (2) from rotating. Remove nut (3) from the end of the selector shaft (4). Carefully remove the shift lever
(2) from selector shaft (4).
4. Remove the two bolts (6). Remove the PNP switch (5) by sliding it outward over the selector shaft (4).
Installation Procedure
1. Be sure that the neutral assurance bracket (2) is in the proper position on PNP switch (1).
2. Make sure the selector shaft is in the N (Neutral) position as follows:
^
Place a wrench on the selector shaft flats and rotate the shaft to its furthest clockwise position.
^
Rotate the selector shaft counter-clockwise two detents.
3. Align the PNP switch (5) with the main housing so that the neutral assurance bracket is facing outward.
