2004 Cadillac SRX stability system engaged indicater

Can't explain what is exactly occurring, it most likely could have been caused by the brake repair. If a wheel speed sensor was disconnected, or the harness routed wrong where damage occurred, then one wheel may be reading different speed than the rest. What happens is twofold, in this case. When you are driving normally, the speed of the three wheels(for example) is advancing, while one is not. Normal operation of the traction system, would assume that wheel spin is occurring, and reduce torque to try and get the speeds back in check. When a brake switch input is brought into the picture, know we think that one wheel is in a skid, and an ABS event occurs for the same reason, bring the speeds in check. You should have an ABS light, or service stability message if it were unplugged or damaged. You could have a bad sensor, that has the correct resistance, but don't generate a correct signal, that will fool the system into doing what I have described. That is just one scenario. Yes it could have been caused by the work, but it also may not be.