Windshield weather strip problem

Ok so like the title says I got a problem with the weather strip on the windshield. Little by little started coming off right in the dead center of the windshield. When going on the highway the wind would get up underneath it and make a horrible flapping sound against the truck. It sounded like I was in the middle of a drive by, anyways now more than half of it comes off even when driving in the city and off the highway. I've tried tucking it back in and made sure it's really snug in there with no avail. So does anyone know what I can do to keep it from dislodging itself?

 

will it be the seal of the windshield? may be the labor who did not do a good job of seal the windshield good? bring it back to the dealership and have them fix it.

 

Yes it is the windshield seal, forgive me I didn't know the correct name lol. Well I feel weird taking the truck back due to the fact it's three years old. I was wondering if there is a product I could apply or am I better off taking some where like the dealership?

 

a glass place may have some rubber butyl you could use to seal it up, silicone will not hold up as well but is another option,available at lowes, home depot. lift weatherstrip with thin device and squirt adhesive...

 

Thanks old soul I'll definitely give that a try!