Circuit/System Verification

NOTE:

If the green LED is off with the ignition ON and the LED functions correctly when commanded with the scan tool, contact the OnStar Center to confirm the vehicle has a current subscription. When rear camera display is in the Inside Rearview Mirror the LED's are non-serviceable because they are internal to the mirror.

Ignition ON.
Verify no U-code is set.
- If a U-code Is Set
  Refer to Control Module U Code List
- If a U-code Is Not Set
Verify DTC B2476 or B2482 is not set.
- If DTC B2476 or B2482 is set
  Refer to DTC B2476 or B2482
- If DTC B2476 or B2482 is not set
Verify that the green LED turns ON and OFF when commanding the green indicator ON and OFF with a scan tool.
- If the green LED does not turn ON and OFF
  Replace the A10 Inside Review Mirror.
- If the green LED turns ON and OFF
Verify that the red LED turns ON and OFF when commanding the red indicator ON and OFF with a scan tool.
- If the red LED does not turn ON and OFF
  Replace the A10 Inside Review Mirror.
- If the red LED turns ON and OFF
All OK.