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

Exterior View


Object Number: 330150  Size: LF
(1)Rear Window Defogger Grid
(2) Radio Antenna
(3) Lamp Assembly - RR, LR Similar
(4)Center High Mounted Stop Lamp (CHMSL)
(5)License Lamp
(6) Backup Lamp - Left, Right Similar
Figure 2:

Left Side of Passenger Compartment, Rear Package Shelf


Object Number: 328340  Size: LF
(1)Antenna Choke