Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
8. Loosen the TCM electrical connector bolts.
9. Disconnect the TCM electrical connectors (1).
10. Remove the TCM and cover.
11. Remove the fan shroud retainers (1).
12. Remove the fan shroud bolts (2).
13. Remove the upper fan shroud.
Installation Procedure