1995 GMC Jimmy Owner's Manual - Page 226

To Remove the Rear-Mounted Spare Tire Make sure the carrier arm is fully latched to the endgate. Remove the tire's cover. The locking wheel nut can be removed by snapping the rubber weather cover off the face of the lockcase. Insert the key andpull the lock case straight off. It is not necessary to turn the key. The wheel wrench can thenbe used to remove the lugnut. I the Use socket end of your wheel wrench to remove the wheel nuts that secure the tire to the carrier.Then, lift the tire off its mounting bracket. 5-24