Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

DTCs B008A and B008B are Type C DTCs.
The SDGM commands the driver information center (DIC) on the instrument panel cluster to display the "Service Hybrid System" message via serial data communications.