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 Air Temperature Actuator Ignition | 1, 2 | 1, 2 | - | - |
| Front Auxiliary Air Temperature Signal | 1 | 1 | 1 | - |
| Rear Auxiliary Air Temperature Signal | 2 | 2 | 2 | - |
| Auxiliary Air Temperature Actuator Control | 1, 2 | 1, 2 | 1, 2 | - |
| Auxiliary Air Temperature Actuator Ground | - | 1, 2 | - | - |
| 1. Auxiliary Air Temperature Control Inoperative from Front Control 2. Auxiliary Air Temperature Control Inoperative from Rear Control |
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