2021 Chevy Blazer radiator leak and steering assist reduced message

Had it checked out at the dealership, told it was leaking no pressure test confirmed. No visible leaks at home, have to add coolant every once in a while and I can smell it. Now we are getting the engine lights TC off, Steering assist reduced be careful message. It all started with a CEL and we had it looked at and was told we needed a new radiator but it would cost over $1200. The car has 48,000 miles on it and this started around 42,000. We bought this for a family as a brand new car and it’s unbelievable. We love the car but we are scared for the reliability and safety of owning it. Also the cost to repair issues that happen on there own that seem like a manufacture defect is a real concern.