Sierra Classic 2500 2WD V8-6.6L DSL Turbo (2007)
14. Disconnect the main engine electrical harness connectors. Lift up on the latches (1) in order to disconnect the connectors.
15. Open the harness clip (2).
16. Remove the main engine electrical harness connectors.
17. Remove the engine harness main electrical connectors bolts.
18. Disconnect the barometric sensor electrical connector.
19. Remove the engine harness main connector bracket bolts.
20. Remove the water outlet tube.