Removal (4.3L)
WARNING: This page is about a different car, the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect negative battery cable. Remove coolant reservoir, air cleaner assembly and upper fan shroud. Remove drive belt. Remove heater hose pipe from generator. Remove oil tubes and support bracket. Remove generator mounting bolts and generator. See Figure. Disconnect generator electrical connectors.