Conditions for Setting the DTC
WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
C0575 02, C0580 02, C0585 02, and C0590 02
A short to ground on the control circuit is detected.
C0575 04, C0580 04, C0585 04, and C0590 04
An open circuit on the control circuit is detected.
C0575 0F, C0580 0F, C0585 0F, and C0590 0F
An erratic current on the actuator circuit is detected.