I have been driving my vehicle when on three seperate occasions the service stabilitrak message flashed on the dic and i lost engine power. one of the times this happened i was on a road where the speed limit was 55 and the issue almost caused a vehicle to crash into me. the message goes away after about 5 minutes. i tried taking it to the dealership twice and was told they cant replicate the problem so now i dont even bother trying to have them fix it. how can a major safety issue like this not be fixed by gm!!