Circuit/System Verification

WARNING: This page is about a different car, the 2018 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If the green LED is off with the ignition ON and the LED does not function when commanded with the scan tool, contact the OnStar Center to confirm the vehicle has a current subscription.

Ignition ON.
Verify no DTCs are set.
- If any DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If no DTCs are set
Verify that the green indicator turns ON and OFF when commanding the green indicator ON and OFF with a scan tool.
- If the green indicator does not turn ON and OFF
  Refer to Circuit/System Testing - Green Indicator Test
- Go to next step: If the green indicator turns ON and OFF
Verify that the red indicator turns ON and OFF when commanding the red indicator ON and OFF with a scan tool.
- If the red indicator does not turn ON and OFF
  Refer to Circuit/System Testing - Red Indicator Test
- Go to next step: If the red indicator turns ON and OFF
All OK.