Sierra 2500 4WD V8-6.6L DSL Turbo (2007)
17. Connect the A/C compressor clutch electrical connector (2).
18. Connect the A/C cut out switch electrical connector (1).
19. Install the drive belt.
20. Connect the negative battery cables.
21. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) Cooling System Draining and Filling (Vac-N-Fill).
22. Install the air cleaner.