Circuit/System Verification
WARNING: This page is about a different car, the 2007 Pontiac Torrent and 2007 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
DTC C0550 will set as result of internal (EBCM) circuit failure.
Verify that the DTC will not clear with a scan tool.
- Replace the EBCM.