Car starts fine. After a few miles all the idiot lights go on and goes into limp mode. Stop and put in park then move to drive and can go for additional miles 50-100+ and then car stalls. Car stalls after 5 minutes also. Turn car off wait for a few minutes can now start car and go some more before stalling again. Chevy "Certified Mechanics can't find the problem. They suggest replacing electrical harness and ECM. So far no recalls for this they say. I think its a sham.