Sierra 1500 4WD V8-5.3L VIN B HO (2006)
6. Remove the 2 detent spring bolts (3). Remove the detent spring assembly (2).
7. Disconnect the internal wiring harness from the detent lever/IMS assembly.
8. Remove 10 bolts at locations marked (1) and 4 bolts at locations marked (2). Support the control valve assembly, about 10 pounds, and remove the
last bolt marked (1).
Important: As the control valve assembly is removed, be careful not to lose the manual selector valve pin or allow the manual selector valve to
slide out of the control valve assembly.