It's really not that hard. To change the Front brake pads (the rear are similar):
1) After jacking and supporting the Jeep, remove the wheel.
2) Use a C clamp (about 6" to 8") to compress the piston.
3) Remove the 2 Hex Key slide bolts that are under the plactic caps. Clean the bolts and set them in a clean place. These Hex Key bolts are Metric. If I remember correctly, they are 7 or 9mm.
4) Remember, hang the removed caliper on a piece of wire or tie-strap. Never allow the caliper to hang by the brake hose.
5) Remove the pads and get a new set. There are 2 different kinds calipers for this Jeep and they use different pad sets. You can't tell which one it is on OEM callipers until you remove it.
6) Insert new pads being carefull not to get any grease or oil on them. It usually comes off your hands or fingers.
7) Place caliper on rotor.
8) Lubricate the Slide Pins. sometimes the lube comes with the new pads but other times it doesn't. Find out before you bring the new pads home 'cause there is a special lube for the slide pins.
9) Install the slide pins and tighten them to 25-30 foot pounds.
10) Reinstall wheel, lower and you're done.
11) APPLY BRAKE PEDAL 3 TO 4 TIMES UNTIL THE BRAKE PEDAL FEELS FIRM OR WHEN YOU PUT IT IN GEAR YOU WILL RUN INTO WHAT EVER IS IN FRONT OR BACK AS YOU WILL HAVE NO BRAKES
12) Seat the brake pads, the methods vary but the first 3-5 applications while driving will have less than desired braking so allow extra space for stopping
There should be a contact switch just in front of the brake pedal up under the dash panel.
The 2009 Jeep Grand-Cherokee has 59.1 in. of front shoulder room.
The 2003 Jeep Grand-Cherokee has 58.9 in. of front shoulder room.
The 2013 Jeep Grand-Cherokee has 57.0 in. of front hip room.
The 2007 Jeep Grand-Cherokee has 57.1 in. of front hip room.
The 2002 Jeep Grand-Cherokee has 39.5 in. of front head room.
The 2004 Jeep Grand-Cherokee has 58.9 in. of front shoulder room.
The 2002 Jeep Grand-Cherokee has 58.9 in. of front shoulder room.
The 2013 Jeep Grand-Cherokee has 39.9 in. of front head room.
The 2011 Jeep Grand-Cherokee has 57.0 in. of front hip room.
The 2010 Jeep Grand-Cherokee has 57.6 in. of front hip room.
The 2005 Jeep Grand-Cherokee has 59.1 in. of front shoulder room.