2000 Cadillac DTS

Engine Cooling problem
2000 Cadillac DTS V8 Front Wheel Drive Automatic 150000 miles

if my thermostat does not work, will it work if I cancel it or do I necesary need to replace it, OTHER THAN THAT WHAT ELSE CAN BE THE PROBLEM FOR OVERHEATING, THANK YOU.
Rafael farias
September 3, 2009.

If it is faulty then it needs replaced. Overheating can be caused by many things i.E. Cooling fan(s) not operating, water pump faulty, coolant leaking, radiator clogged etc.