Sierra 1500 2WD V6-4.3L (2008)
2. Disconnect the internal wiring harness from the solenoid being changed.
3. Remove the solenoid retainer (2) for shift solenoid 1 (SS1) (5). Note the position of the solenoid connector and pull the solenoid (5) out of the
bore in the control valve assembly (1). The O-rings (3 and 4) provide the resistance felt during removal.
4. Remove the solenoid retainer (6) for shift solenoid 2 (SS2) (1) or shift solenoid 3 (SS3) (4), whichever is being replaced.
5. Note the position of the solenoid connector and pull the solenoid out of the bore in the control valve assembly. The O-rings (2 and 3) provide the
resistance felt during removal.
Important: The TCC pressure control solenoid (PCS) retaining bracket must not be modified. Note that the angle between the 2 bracket
surfaces is less than 90 degrees. Replace the bracket if the angle is 90 degrees or greater.
6. Remove the TCC PCS retaining bolt and retaining bracket.
7. Remove the TCC PCS (7).
Installation Procedure
