RE: Service Stability System
From the old Caddy Forum, everyone said change the Steering Wheel Position Sensor..
Mine is a 03 with 64K and the same problem, feels like a ghost is tapping the breaks.
I took it to Caddy Service and advised what I read here...No dice, they changed the RT RR Hub Nearing, no luck, the Electronic Break Module, no luck, the Power Control Module, no luck...finally they changed the Steering Wheel position sensor....
there are some other causes, but the one that seems most widely the culprit is the SWPS...