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 |
|---|---|---|---|---|
| Park Lamp Relay B+ | 1 | 1 | - | - |
| Park Lamp Switch Signal | B257A 00 | B257A 00 | B257A 00* | - |
| Park Lamp Relay Control | 1 | 1 | B2585 00 | - |
| Park Lamp Control | 1 | 1 | 1 | - |
| Left Front Park/Turn Signal Lamp Ground | - | 1 | - | - |
| Left Marker Lamp Ground | - | 1 | - | - |
| License Lamp Ground | - | 1 | - | - |
| Right Marker Lamp Ground | - | 1 | - | - |
| Right Front Park/Turn Signal Lamp Ground | - | 1 | - | - |
| Left Rear Park Lamp Ground | - | 1 | - | - |
| Right Rear Park Lamp Ground | - | 1 | - | - |
| Headlamp Switch Ground | - | 2 | - | - |
| * Internal damage to the headlamp switch may occur if shorted to B+ 1. Park Lamp Malfunction 2. Park Lamp Switch Ground |
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