Do 1995-2004 blazers all use the same wheel bearing? I want to buy one now as a preemptive measure for my 96 Jimmy and I found a deal that is a wheel bearing for a "98-02" blazer. It seems like they are the same part, but torque settings are different (unless I'm mistaken).

No, the 92-97 hubs are bare, the 98-current hubs have the ABS sensor built into them, and the spacing for the bolts is about a 1/4" wider. The 98+ knuckles are also different. (I upgraded to the 98+ dual piston brake setup w/ larger rotor so I checked that when I did the swap)