Buick 2000 Park Avenue Owner's Manual page 340

Supercharged Engine Accessory Belt (L67)
The Supercharged 3800 engine uses two accessory drive
belts. One belt drives the generator, power steering
pump, coolant pump and air conditioning compressor.
The second belt drives the supercharger. Each belt has
its own tensioner and idler pulley.
6-78
1. Front Belt
2. Back Belt
A. Generator
B. Power Steering
C. Crank
D. Supercharger
E. Coolant Pump
F. Air Conditioning