Abs brakes and traction control lights stays on

I have this issue. And from reading the owners manual and what I learned was because my tire pressure sensor need repair and I haven't been able to get it fixed, it's a normal issue Cadillac has built into the car so your forced to maintain your car or get more problems handed to you, You know, one problem leads to another thing. Well when reading about the tire pressure sensors to see what it intails to replace/ repair it specifically read that it would effect the ABS & TRACTION Control this causing it to be displayed on the dash. Also I accidentally learned that if the stems on the tires get coated with brake dust or other debre it will cause no reading on the dash at all on tire air pressure cause after I washed and cleaned the wheels and stems I started getting a reading again but not on all. The sensors are in or on the tire stems, they have a battery life of several years but not a lifetime and will have to be replaced. The place to order them is RockAuto.com otherwise you'll pay at least $50 each. I hope this helps with your problem. It's worth checking into at least.