OnStar® Block Diagram
WARNING: This page is about a different car, the 2014 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| HW | Hard-Wired |
| HW | Hard-Wired |
| HW | Hard-Wired |
| HW | Hard-Wired |
| HW | Hard-Wired |
| DB | Serial Data - GMLAN Low Speed |
| DD | Serial Data - GMLAN High Speed |
| B24 | B24 Cellular Phone Microphone |
| C3 | C3 Telematics Communication Interface Control Module Battery |
| S51 | S51 Telematics Button Assembly |
| T4G | T4G Cellular Phone, Navigation and Digital Radio Antenna |
| T4S | T4S Wireless Communication Antenna - Bluetooth |
| K73 | K73 Telematics Communication Interface Control Module |
| A11 | A11 Radio |
| X84 | X84 Data Link Connector |