Have you read the National Park Service page for road conditions at Sequoia Kings Canyon?
https://www.nps.gov/seki/planyourvis...conditions.htm
Check sites like this for reasonably up to date information. Understand that when you see the date a road
usually opens after the winter, that is a historical average while this winter has delivered far above average snowfall. Roads at high elevation are likely to open later this spring than usual.