I'm running 2" TF Big Bore Expedition shocks and the rear end on my drivers side is sagging quite a bit. Is this an indication of a blown rear shock? I'm about to order a new one. How hard of a job is it to remove and install?

 

I would suspect that your coil spring on the driver side has settled more than the others. Your shock doesn't carry the weight of the vehicle, it merely helps control movement of the axle