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 |
|---|---|---|---|---|
| WPR HI Relay B+ | 1, 2 | 1, 2 | - | - |
| Windshield Wiper Switch Signal | B3922 00 | 1 | 1 | - |
| Windshield Wiper Switch High Signal | 4 | 2 | 2 | - |
| Windshield Wiper Motor Park Switch Signal | 3 | 3 | - | - |
| WPR Relay Control | B3715 00 | 1 | 4 | - |
| WPR HI Relay Control | 4 | 2 | B3875 00 | - |
| Windshield Wiper Motor High Speed Control | 2 | 2 | 4 | - |
| Windshield Wiper Motor Low Speed Control | 1 | 1 | 4 | - |
| Windshield Wiper Switch Low Reference | - | 1, 2 | 1, 2 | - |
| Windshield Wiper Motor Ground | - | 1, 2, 3 | - | - |
| WPR Relay Ground | - | 1 | - | - |
| 1. Delay or Low Speed Wipers Inoperative 2. High Speed Wipers Inoperative 3. Wipers Do Not Park 4. Wipers Always ON |
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