Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
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.
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.
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).
