1995 Pontiac Bonneville Owner's Manual - Page 224

Engine Accessory Belt 3800 Supercharged (L67) Engine (Option) Your Bonneville may have a 3800 Supercharged engine. The Supercharger is a device which is designed to pump more air into theengine than it would normally use. This air mixed withfuel, creates increased engine power. Since the Supercharger is a pump and is driven from an engine accessory drive belt, increased pressure is available at all driving conditions. A C The 3800 (L36) engine uses an engine accessory belt. This diagram shows the features connected by the belt routing. See "Maintenance Schedule" in the Index for when to check the belt. A. Power Steering B . Alternator D. Crank E. Coolant Pump The powertrain control module (PCM), works with a vacuum control to regulate the increased pressure required during specific driving conditions. When this increased pressure or boost is not desired, such during as idling and light throttle cruising, the excess air that the Supercharger is pumping is routed througha bypass. All of these controls, working together provide high performance character and fuel efficiency in the 3800 V6 Supercharged engine. The power steering pump uses a remote reservoir mounted on the throttle and cruise control cable bracket. See "Maintenance Schedule" in the Index for whenyou should check the fluid. C. Air Conditioning E Tensioner 6-11