Welcome to the Wbody world lol! You'll get use to changing wheel bearings.
Haha wow, that's funny. Just replace them in pairs and save frustration later. Fronts usually go at around the same time. Timken or Moog.
2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come. 2002 Grand Prix GT N/A 127k - Same as 06 Plus: Trans Cooler, DIY Aux Input, LED lighting, Suspension Upgrades, Tint, Retrofits. Sold.