Diagnostic Aids

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

A low voltage DTC in multiple modules indicates a concern in the charging system.
The ABS, BRAKE, and VDC indicators and the DIC messages may turn ON without any DTCs set, if the EBCM detects that the battery voltage is less than 9.7 volts, and there is no vehicle speed.