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

Dome Lamp Harness To Driver Information Display Module


Object Number: 397299  Size: LF
(1)Driver Information Display Module, Connector C2 (w/ Sunroof)
(2)Driver Information Display Module
(3)Driver Information Display Module, Connector C1
(4)S390
(5)Overhead Console
Figure 2:

Forward Lamps Wiring Harness Options


Object Number: 354574  Size: LF
(1)Hood Latch Support
(2)Ambient Air Temperature Sensor
(3)Radiator Support, RH
(4)Outside Air Temperature Sensor (w/ Auto A/C)