Silverado 3500 4WD V8-6.0L VIN U (2004)
10. If equipped with RPO HP2, remove the auxiliary heater water pump bracket nuts (4).
11. Remove the auxiliary heater water pump from the studs, and reposition out of the way.
12. If equipped with RPO HP2, remove the starter/generator control module (SGCM) cover bolts, and cover.
13. Remove the 3-phase cable nuts to the SGCM.
14. Remove the 3-phase cable from the SGCM.