2001 DeVille

This one runs great,BUT, it also dies when it wants to. It has died while in a turn(not good), while at a stop, coasting down a hill and while climbing a hill. It always starts right up and all is well. It disent happen often but it could be
a real problem if the wife is driving it at the time. Any sudjestions.

Sounds like the crankshaft position sensors are failing. Check the computer codes to confirm.

Sounds like the crankshaft position sensors are failing. Check the computer codes to confirm.

I had the same problem and it was the crankshaft position sensors.

Crankshaft position sensor problems often occurs. Bad thermostat :shakehead