2008 GMC Acadia stability control problems

1. While traveling on an interstate highway, the vehicle's "stabilitrak" control abruptly shut down, and the brakes locked with light depressions of the pedal. (stabilitrak controls the vehicle's traction control, anti-lock brakes, and roll-prevention program.) 2. The failure has occurred approximately 5 times; on one occasion, the engine stalled in addition to the above. Consequences were as described above. 3. The vehicle was taken on an urgent basis to the GMC dealer the following day.

Check engine lights are on, and stability lights on, dealer says problem is due to timing chain problem. There is technical bulletin out for this vehicle located here: [link removed] GMC is not offering to fix this problem without a large fee, saying our VIN does not match the recall. Yet there is a technical bulletin describing our exact problem. Can you let us know if our vehicle is covered by this technical bulletin and if there are other complaints similar to this for our vehicle.