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 |
|---|---|---|---|---|
| Blower Motor Resistor Assembly B+ | 1 | 1 | - | - |
| HVAC Control Assembly Ignition | 1 | 1 | - | - |
| Blower Motor Control | 1 | 1 | 2 | - |
| Low Speed Control | 1 | 1 | 2 | - |
| Medium 1 Speed Control | 1 | 1 | 2 | - |
| Medium 2 Speed Control | 1 | 1 | 2 | - |
| High Speed Control | 1 | 1 | 2 | - |
| Blower Motor Resistor Assembly Ground | - | 1 | 1 | - |
| Blower Motor Ground | 2 | 1 | 1 | - |
| 1. Blower Motor Inoperative 2. Blower Motor Always On |
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