WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating Camshaft Position Sensor
Courtesy of GENERAL MOTORS CORP.
Fig 2: Locating Crankshaft Position Sensor "A" & "B", EGR Valve, EVAP Purge Solenoid, HO2S & Ignition Coils
Courtesy of GENERAL MOTORS CORP.
Fig 3: Locating EVAP Canister & Vent Solenoid
Courtesy of GENERAL MOTORS CORP.
Fig 4: Locating Fuel Sender & Fuel Tank Pressure Sensor
Courtesy of GENERAL MOTORS CORP.
Fig 5: Locating HO2S
Courtesy of GENERAL MOTORS CORP.
Fig 6: Locating Idle Air Control Valve, Engine Coolant Temperature Sensor, Knock Sensor, MAP Sensor & TP Sensor