I am asking for help on what to do about the overheating issue on my 05 Crossfire limited with 92k.
Last summer we bought this car from an auction. Not knowing any problems that it might have. It's been a very fun car and we've done a lot of work to it.
Here is a short list...

New: (cooling system)
Radiator
Radiator fan
Radiator fan control module
radiator hoses
50 amp fuse for the radiator fan
Coolant overflow reservoir
And lastly.... the thermostat

The water pump was replaced before we owned the car

Other:
Secondary air injection pump
Transmission conductor plate
steering stabilizer bar
New battery

So we replaced the radiator because it had a crack and the two radiator hoses were leaking. The fan was sparking and was popping the 50 amp fuse so those were both replaced. We had thought the fan control module was the cause of the fan not functioning so that is why that was replaced. The overflow reservoir also had a crack in it so that was replaced too. This car was clearly not taken care of with the previous owners. So I've been determined to fix all these issues because the car is unique and fun to drive. All of these parts were replaced myself. The system also has the correct new coolant.
PROBLEM
The weather has begun to get consistantly hot and when I am driving at high way speeds the temp gauge starts to rise above its normal running temp which is a tick above half way. It's not until I slow down that it begins to go down. The fan will kick on on high speed. (Sounds like a plane is taking off) I'm not sure if it just the gauge that is malfunctioning or maybe I need a new coolant temp sensor? I just replaced the theromostat this weekend hoping that would fix the issue.
If anyone knows what i should do next please give me some advice. I love this car and want to bring it back to its former glory 😉