Well I did it on mine.. used it the next day and the chime still comes on when driving without the belt on.. so I'd say this doesn't work as a permanent sol'n - prob works only for that time that you do it.
No, it should be permanent. I had to do it several times before it "took."
Disclaimer: I don't use the seat belts on dirt road to my house 3/4 mile long with speed limit of 20 mph.
Traded in on 2012 Hyundai Azera: 2007 Grand Cherokee Laredo, Rocky Mountain Edition, Bright Silver, 4.7L V-8, factory hitch and tow hooks, Mopar rock rails, Mopar skid plates, Rusty's 2-inch BB with shocks, cabin air filtration. Firestone Destination AT tires 255/70/R17, 4xGuard skids--front, rear, and belly, BDS rear diff guard, OME rear shocks.