The knob appears to be loose or not secured well and sits and rattles as I drive. It didn't start like that. Slowly became a nuisance over the past 4-5 months. it looks like there's a sleeve between the button and handle. I guess I'll try to figure something out.I have a metal “rattling clank” sometimes when I lower the e-brake handle, but that’s the only time. Might not be the same noise.