GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2001 🢒 LeSabre 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Emission Hose Routing Diagram
Figure 1:

Vacuum Hose Routing 3800 (Vin K)
Object Number: 693739 Size: MF
(1)Secondary Air Injection (AIR) Vacuum Control Solenoid Valve, if equipped
(2)Secondary Air Injection (AIR) Shut-Off Valve, if equipped
(3)Throttle Body
(4)To EVAP Canister
(5)EVAP Canister Purge Valve
(6)Fuel Pressure Regulator
(7)Secondary Air Injection (AIR) Vacuum Check Valve, if equipped
Figure 2:

EVAP System Overview
Object Number: 678941 Size: LF
(1)EVAP Canister Purge Solenoid
(2)EVAP Canister
(3)Fuel Fill Neck/Fill Cap
(4)Rollover Valve/Fuel Tank Pressure (FTP) Sensor
(5)Fuel Tank
(6)EVAP Canister Vent Solenoid
(7)Vent Hose/Pipe
(8)EVAP Vapor Pipe
(9)EVAP Purge Pipe
(10)EVAP Service Port