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

Compass and Temperature Display Wiring


Object Number: 298012  Size: MF
(1)Compass and Temperature Display Module
(2)Compass and Temperature Display Module Connector
(3)Compass and Temperature Display Module In Line Connector
(4)Overhead Console
Figure 2:

Overhead Console Wiring


Object Number: 298014  Size: SF
(1)Overhead Console