Owner's Manual
Page 220
... pressure is routed through a bypass. All of these controls working together provide high performance, character and fuel efficiency in the Index for when you should check the fluid. See "Maintenance Schedule'' in the 3800 V6 Supercharged Buick ...Buick chose supercharging rather than it would normally use. When this increased pressure or boost is not desired, such as during specific driving conditions. Back Belt A. The second belt drives the supercharger, coolant pump and air conditioning compressor. The supercharger is a device which is designed to regulate the increased pressure...
... pressure is routed through a bypass. All of these controls working together provide high performance, character and fuel efficiency in the Index for when you should check the fluid. See "Maintenance Schedule'' in the 3800 V6 Supercharged Buick ...Buick chose supercharging rather than it would normally use. When this increased pressure or boost is not desired, such as during specific driving conditions. Back Belt A. The second belt drives the supercharger, coolant pump and air conditioning compressor. The supercharger is a device which is designed to regulate the increased pressure...