Headliner leaks by pillar on drivers side and passengers side when it rains

What is your question?

Every time it rains or there is a thaw, the headliner on the drivers side above the pillars gets soaked and it rains in the car. This runs the entire length of the headliner and is starting to mold above the pillar.When I turn a corner, there's a downpour in the car. It also does this is on the passengers side, but not quite as bad. This is a 2006 Colorado. There is a sunroof, but there are no channels or plugs on the sunroof, and there is NO leaking from the sunroof. The problem is worse when I turn a corner.

What makes this problem better or worse?

Worse when it rains or when there's a thaw

How long has your 2006 Chevrolet Colorado had this problem?

two years - it's getting worse by the day