Circuit/System Testing
WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, turn signals OFF.
- Observe the left rear turn signal. The turn signal should not be illuminated.
- If the turn signal is illuminated, test the left rear stop/turn lamp supply voltage circuit for a short to voltage.
- Test the left rear stop/turn lamp supply voltage circuit for a short to ground or an open/high resistance.
- If all circuits test normal, replace the BCM.