i have an 2006 dts engine light blinking and service traction control
the code on the scanner is p0355 i fixed almost everything i can think of i put new spark plugs change the coil change the injector and put a new computer in i still havent got any change
that's because the traction control is commonly tied into your wheel sensor if you hear a loud humming noise inside your car when moving that's a bad wheel bearing. normally to fix the sensor you have to replace the whole hub assembly check the wire going down to your hub first and fore most as it might just be a damaged clip or not seated correctly.
Replacement of a wheel bearing on mine was the problem. Once fixed the reaction control light and check engine light went off. Deathjam is right.
I had same problem,it was a my ignition coil #6 2008 CADILLAC DTS platinum edition
I just changed the spark plugs and coils and put a new wiring harness to the wheel and I still have the problem in my 2006 DTS.
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