Chevy Malibu Gear Shifter

http://Chevy-Malibu.autoboardz.com/2000-Malibu-Gear-Shift-ftopict186587.html (2000 Malibu Gear Shift)
My 2000 Malibu gear shift knob has begun to tear away from the post. Any insight on where I can obtain an online replacement? thanks!!

http://Chevy-Malibu.autoboardz.com/2004-Malibu-Maxx-electronic-gear-shift-problem-ftopict248898.html (2004 Malibu Maxx electronic gear shift problem)
2004 Malibu MAXX electronic shifter not functioning on the manual mode. When the shift is on overdrive, it works fine by itself. But when I try to lock into low gear and use the +/- button to shift ..
« Doubtful that the switch is bad. I fixed mine after I noticed it was doing funny things such as downshifting after letting of the gas and .. »