Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1011 does not indicate a ROS system malfunction and will not cause any warning indicators to illuminate. Factors such as a long engine crank or a delay in serial data communications will cause B1011 to set.