I had the following messages pop up in the DIC today, in rapid succession:

SERVICE BRAKE SYSTEM
SERVICE BRAKE ASSIST
SERVICE TRACTION CONTROL

This comes and goes while driving, and resets with every key cycle. The only performance difference is that I have no cruise control. Is this, as I believe, the ABS module? If so, how hard is it to replace?

2007 Monte Carlo SS, 188K miles, LS4 engine, 4T65E-HD transmission, no significant mods

 

Did the Brake warning lamp come on at the same time?

 

Yes, as well as the traction control light. Thought I said that.

 

Have you checked the brake fluid in the master cylinder. There is a sensor there that can trip those warnings if the fluid level gets too low.

 

Well, I topped it of as best I could (if there's a min marker, I can't find it, so I went just under the max) last Tuesday, and the problem has not reoccurred. Thanks a lot!