Service stability light comes on and my Tahoe will not move. Brakes are holding, have replaced ABS module, ABS valves, all brakes and rotors, master cylinder and booster. And still, I'm having the same problem! vehicle has been to midway motors a cheverolet dealer and still no answer, and it's throwing the very same codes CO131 rear dump valve failure! these problems arose after driving kids to school. Had to have vehicle towed away as it would not move even when placed in neutral. Total brake lock down!

- Hutchinson, KS, USA

At low speed or when braking vehicle will not turn right, also when stationary, vehicle breaks traction when turning in rain

- Knoxville, TN, USA

Tahoe flashes service stability, stability sys disabled, turn signal on while driving. When the Tahoe flashes service stability and or stability sys disabled it shuts down completely. The Tahoe does not like being idle or turning on the air as it will shut off completely. This is a safety issue as everything locks up and you may/not can pull over in time. I don't know if this is electrical or not. A lot of folks are looking for answers when I googled the errors.

- Charlotte, NC, USA

As I was driving the car the system stabilty disabled light continues to come on. There has been no damages so far and nothing has given out or broken but the light continues to come on and no mechanic can find anything wrong with the vehicle.

- Rock Hill, SC, USA

This is a fleet vehicle with multiple drivers. It has been garaged since purchased new, and frequently washed. It is infrequently used in poor weather, when roads are salted or brined, and undercarriage is rinsed after use in such conditions, intending to avoid premature undercarriage rust. In this event, the brake pedal gradually lost pressure while holding at a stop and vehicle began to roll imperceptibly. Driver initially thought seat was misadjusted from previous driver and that his applied pedal pressure was relaxing, therefore he adjusted the seat and continued driving. This was during a snowstorm, so driving was cautious anyway. The prior driver had noticed the same gradual pressure loss retroactively when asked. With 2 more hours driving (mostly highway with little need for braking), the problem worsened to the point that braking was completely unreliable and instrument cluster warnings were triggered. The problem is ruptured brake lines, due to premature rusting.

- Bala Cynwyd, PA, USA

Warning light for "service 4 wheel drive" and "stability system disabled" has come on repeatedly due to an "ecoder motor sensor" failure. This is at least the second time replaced, maybe third.

- Roswell, GA, USA