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

Left Side Under the Instrument Panel


Object Number: 748091  Size: LF
(1)Fuel Door Lock Release Switch Connector - LH Drive
(2)Fuel Door Lock Release Switch - LH Drive
Figure 2:

Right Side Under the Instrument Panel


Object Number: 748092  Size: LF
(1)Fuel Door Lock Release Switch Connector - RH Drive
(2)Fuel Door Lock Release Switch - RH Drive
Figure 3:

Rear Compartment, Left


Object Number: 747984  Size: LF
(1)Fuel Door Lock Release Switch Connector
(2)Fuel Door
Figure 4:

Rear Compartment, Rear Compartment Lid


Object Number: 154463  Size: LF
(1)C421
(2)Center High Mounted Stop Lamp (CHMSL)
(3)Rear Compartment Latch
(4)Rear Compartment Key Cylinder Release w/ Disarm Switch
(5)Rear Compartment Lid Pulldown Motor