Sierra 1500 2WD V6-4.3L (2008)
Shift Solenoid: Service and Repair
Allison - Automatic Transmission
Control Valve Solenoid Replacement (PCS1 and PCS2)
Control Valve Solenoid Replacement (PCS1 and PCS2)
Removal Procedure
1. Remove the oil pan and transmission internal oil filter. Refer to Oil Pan Replacement (See: Automatic Transmission/Transaxle/Fluid Pan/Service
and Repair/Allison - Automatic Transmission) .
2. Disconnect the internal wiring harness from the solenoid being changed.
3. Remove the 2 bolts that fasten reverse signal pipe to the control valve assembly. Remove the reverse signal pipe.
Important: