Hey guys I bought an 03 trailblazer and now my thermostat is about two marks below 210 even warmed up. I decided that in the morning I am going to change the thermostat with oem one. But since I will lose half the coolant I am going to flush it out and refill with some new coolant. So I dont have to buy too much does anyone know the capacity of the coolant system on the v-6 model? I do not have an owners manual so any help would be appreciated.