How do you change a rear pinion bearing on a 97 jimmy?

To change the rear pinion bearing on a 1997 GMC Jimmy, start by safely lifting and securing the vehicle. Remove the driveshaft by unbolting it from the rear differential and marking its position for reinstallation. Next, remove the differential cover and drain the fluid, then take out the axle shafts if necessary. Finally, unbolt the pinion flange, remove the old bearing and race, install the new bearing with the appropriate preload, and reassemble everything in reverse order, ensuring proper torque specifications are followed.