my cadillac is smoking

Take your thermostat out, boil water and drop it in and if it opens up it still good. Do a flush of the radiator,check your cap, and if the water pump is bad it should be makeing a noise.

im just gonna replace the cap first, i was told 20 minutes of driving with no water would overheat the motor andblow a head gasket

did you ever figure out what it was, cause i noticed mine is doing the same....