On my 2004 CTS, Every so often, randomly, a message will pop up that says, "Service Brake Assist"also the traction control and ABS light come on. Has anyone experienced this problem, know what's wrongand know how to handle it? It would greatly be appreciated.

 

I too would like some info on how to fix this problem with service break assist on my 04 cts.my breaks won't come loose once I press to stop it's like they get tighter n tighter then start shaking my whole car like the drive line is loose but it's my breaks .when I check them they are very very hot.