Hi guys- I have a 2018 Yukon Denali XL with 97,000 miles. I've been smelling antifreeze for a month or so and when I had it in my mechanic's shop I had him look it over. He said the driver's side plastic tank is leaking at the crimp. (seems like a common problem- thanks, GM) What are your experiences as far a repair or replace? I always try to use US made parts when I can. TIA.