My wife drives a 04 morel Astra which I love to drive in suburbia. However a few weeks ago thanks to my oversight of checking fluid levels the motor became a little overheated. No damage to the motor at all but it took out the thermostat and temp sensor for the thermo fans. Quote for parts to replace both were $175 for thermostat and complete housing and $90 for sensor. These had to be replaced so I went to a spare parts outlet at a second dealership and was sold a complete unit comprising of thermostat, housing and sensor for $157. There are some good guys around. Jim