Circuit/System Verification
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.
- Ignition ON, engine running, place the blower motor switch at the maximum speed position and the mode switch in the vent or panel position.
- Rotate the temperature control switch from the full COLD position to the full HOT position. The air temperature should follow the commanded states of full HOT to full COLD.