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 |
|---|---|---|---|---|
| Front Auxiliary HVAC Control Assembly B+ | 1 | 1 | - | - |
| Rear Auxiliary HVAC Control Assembly B+ | 2 | 2 | - | - |
| Auxiliary Mode Actuator Ignition | 1, 2 | 1, 2 | - | - |
| Front Auxiliary Mode Signal | 1 | 1 | 1 | - |
| Rear Auxiliary Mode Signal | 2 | 2 | 2 | - |
| Auxiliary Mode Actuator Control | 1, 2 | 1, 2 | 1, 2 | - |
| Auxiliary Mode Actuator Ground | - | 1, 2 | - | - |
| 1. Auxiliary Mode Selection Inoperative from Front Control 2. Auxiliary Mode Selection Inoperative from Rear Control |
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