Conditions for Setting the DTC
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.
- The BCM detects a short to ground or open in the I/P dimming voltage reference circuit.
- The BCM detects a short to ground or open in the instrument panel lamps dimming signal circuit.