GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Lower Rear of the Engine (L36/L67)


Object Number: 1273481  Size: LF
(1)C125
(2)Engine Oil Pressure Switch
(3)Vehicle Speed Sensor
(4)Knock Sensor (KS) 2
(5)Knock Sensor (KS) 2 Connector
(6)Knock Sensor (KS) 2 Jumper Harness
(7)C125
Figure 2:

Left Center of Instrument Panel


Object Number: 593534  Size: LF
(1)Instrument Panel Cluster (IPC) Connector
Figure 3:

Lower Left of Instrument Panel (Regal)


Object Number: 1365062  Size: LF
(1)Driver Information Display Switch Connector
(2)Driver Information Display/Fog Lamp Switch
(3)Fog Lamp Switch Connector
Figure 4:

Center of Oil Pan (L36/L67)


Object Number: 1365204  Size: MF
(1)Engine Oil Level Switch
(2)Engine Oil Pan