* Wheel Hub Seals (2 per wheel): These are located on the inside of the wheel hub assemblies. You'll need to remove the wheel, brake caliper, rotor, and possibly the axle knuckle to access them. They prevent grease from leaking out of the wheel bearings. These are *not* technically axle seals but are often confused with them.
* Axle Shaft Seals (2): These are located where the axle shafts pass through the differential housing. One is on each axle shaft. Accessing these requires removing the differential cover. These seals prevent differential fluid from leaking out.
Important Note: Before attempting any seal replacement, consult a repair manual specific to your Jeep Grand Cherokee's year and model. This will provide diagrams, torque specifications, and detailed procedures to avoid damage to your axle. Working on axles requires special tools and knowledge; attempting it without proper experience can lead to serious damage.
If you are unsure about any part of this process, it's strongly recommended to take your vehicle to a qualified mechanic.