Dear Scotty
In the summer of 2019 I got a great deal on a brand new 2019 Corvette Grand Sport. I really lucked out because I got 10 grand off the sticker price and I think I could actually sell it now for more than I paid. It's a fantastic car and it has only 4500 miles on it. I've been bringing it to the dealer once a year for an oil change and free inspection, mainly because it has a dry sump oil system that's more complicated to change and also because I it's so low that I can't even get a jack under it. Plus they give me free inspections for as long as I own the car. The last time I brought it to the dealer they suggested that I have the brake fluid changed because it's some sort of special brake fluid that absorbs a lot of moisture and needs to be changed frequently. I've owned lots of cars and never worried about the brake fluid. The Corvette is just a pleasure car and I've never run it on a race track. Should I have the brake fluid changed the next time I bring it to the dealer?
Marc Spiwak
Your owners manual says to Replace brake fluid every three


The interval is 3 years per the owner's manual as @jack62 showed, then you're due as it's been 3 yrs.
You're due for a change. Once every 3 years is standard on that model Corvette.