Circuit/System Description
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
The distance sensing cruise control (DSCC) module monitors the ignition 1 voltage circuit in order to determine if the voltage is within the normal operating range. When the DSCC module detects that the ignition 1 voltage is below 9.2 volts or above 16 volts, DTC C0800 sets.