Diagnostic Fault Information
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. 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 |
|---|---|---|---|---|
| B+ - BCM X4 Terminal 1 | B2615 00, 5 | B2615 00, 5 | - | - |
| B+ - BCM X4 Terminal 2 | 2 | 2 | - | - |
| B+ - BCM X4 Terminal 3 | 7 | 7 | - | - |
| Left Front Turn Signal Lamp Supply Voltage | 2 | 4 | 4 | - |
| Right Front Turn Signal Lamp Supply Voltage | B2615 00, 5 | 5 | 5 | - |
| Left Rear Stop/Turn Lamp Supply Voltage | 2 | 6 | 6 | - |
| Right Rear Stop/Turn Lamp Supply Voltage | 7 | 7 | 7 | - |
| Left Turn Signal Switch Signal | 2 | 2 | 2* | - |
| Right Turn Signal Switch Signal | 3 | 3 | 3* | - |
| Ground - Turn Signal/Multifunction Switch | - | 1 | 1 | - |
| Ground - LF Park/Turn Signal Lamp | - | 4 | 4 | - |
| Ground - RF Park/Turn Signal Lamp | - | 5 | 5 | - |
| Ground - Left Tail/Stop and Turn Signal Lamp | - | 6 | 6 | - |
| Ground - Right Tail/Stop and Turn Signal Lamp | - | 7 | 7 | - |
| * Internal damage to the turn signal/multifunction switch may occur if shorted to B+ 1. All Turn Signals Inoperative 2. Left Turn Signals Malfunction 3. Right Turn Signals Malfunction 4. Left Front Turn Signal Malfunction 5. Right Front Turn Signal Malfunction 6. Left Rear Turn Signal Malfunction 7. Right Rear turn Signal Malfunction |
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