Circuit/System Verification
WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
- Verify either the Green or Red Indicator is ON with the ignition ON.
- If the Green or Red Indicator is not ON.
- Contact the OnStar Center to confirm the vehicle has a current subscription.
- If there is a current subscription refer to Circuit/System Testing.
- If there is not a current subscription, advise the customer to contact the OnStar Call Center.
- If the Red Indicator is ON.
- Verify no DTCs are set.
- If any DTCs are set
- Go to next step: If the Green Indicator is ON.
- A fault is not currently present and may be an intermittent condition..