Diagnostic Fault Information
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit |
Short to Ground |
Open/High Resistance |
Short to Voltage |
Signal Performance |
| Cellular Microphone Signal |
B2455 04 |
B2455 04 |
B2455 04 |
- |
| Cellular Microphone Drain |
- |
B2455 04 |
1 |
- |
| 1. OnStar Microphone Inoperative - Caller Cannot Be Heard |