PLEASE HELP engine overheating

[tmgoutlaw25]

OK, so I have a 2017 1.4 turbo Chevy sonic. From the day that I came to buy the car it was overheating and they change the coolant reservoir saying that was the problem. Somehow another it ran fine for about a week at interstate speed, driving more than an hour one way. Then it started to overheat. I took it back to the dealer and they said it was a head gasket. I changed the head gasket and it still overheats. I brought it back to the dealer. They said it was the coolant reservoir again, so they change the coolant reservoir . Again, it ran fine for a week and then it started overheating. Now they are telling me that the entire turbo oil coolant and oil lines need to be changed which is a $2000 bill. Obviously at this point I have zero faith and their ability to diagnose , has anyone had anything similar happen to their car and at least have a good idea of what’s wrong? Every time that the car overheats it’s after a long drive of 45 minutes more or less at 70 mph or so is when it starts.

 

[rodslinger]

Has the thermostat ever been replaced? If you aren't losing coolant this is the first thing I would check. I changed thermostat housing, coolant outlet and coolant reservoir with metal parts from ZZP. No more coolant leaks or overheating issues.