GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2001 🢒 Century 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Cellular Communication Component Views
Figure 1:

OnStar System
Object Number: 676947 Size: LF
(1)Roof Accessory Jumper
(2)Cellular Telephone Microphone
(3)OnStar Button Assembly
(4)Cellular Telephone Antenna
(5)Global Positioning System (GPS) Antenna
(6)Vehicle Interface Unit (VIU) and Vehicle Communications Unit (VCU)
(7)OnStar Jumper
Figure 2:

Vehicle Interface Unit (VIU) and Vehicle Communications Unit (VCU)
Object Number: 695150 Size: MF
(1)OnStar Jumper
(2)Cellular Telephone Antenna Connection
(3)C423
Figure 3:

Rear Package Shelf-Left
Object Number: 695155 Size: MF
(1)Global Positioning System (GPS) Antenna Connection
(2)Cellular Telephone Antenna Jumper Connector
(3)Cellular Telephone Antenna Connector
(4)C423
(5)Body Harness