I have a 2007 Chevy suburban LTZ that we just bought and the tail light fuse keeps popping but not instantly. A new fuse will last a day or so and then (of course) when you need the lights they don't work. Headlights work great. Rear brake lights and blinkers work great. It's just the night time tail lights that pop the fuse. What confuses me is that it doesn't pop right away. What would be causing this and how do I fix it??

2007 Chevy Suburban 1500 4x4 V8 5.3L