The 2009 Jeep Liberty takes a dealer-only wiper blade. To my knowledge there are no aftermarkets available. Ask the dealer for installation instructions when you purchase the blade.
The 2002 Jeep Liberty rear wiper blade is unique to Jeep. You'll probably have to get the part at the dealer and may be able to ask for the install procedure.
The 2004 Jeep Liberty has a special Jeep rear wiper blade that you have to go to the dealer for. When purchasing the wiper, ask the dealer for the replacement instructions. There are aftermarket options available for the front however. See sources and related links below.
The 2002 Jeep Liberty takes 19" replacement windshield wiper blades on both sides front.
Wiper fluid
The 2009 Jeep Grand Cherokee has standard hook-end wiper attachments on the front and a fairly specialized pinch tab rear wiper arm attachment. See sources and related links below to view wiper blade installation videos and for information on the special rear wiper blade.
The 2009 Jeep Liberty wiper blade sizes are 19" wiper blades on both sides front. See sources and related links below for more information. Since there are over 22 different wiper arm attachments, do not buy wipers just by length only - be sure to lookup exact wiper blade part numbers by vehicle make, model and year for the brand wiper you decide to purchase. This ensures correct length AND correct attachment.
Purchase a new blade from your local auto parts store and they will install it for you at no extra cost.
11"
The 2008 Jeep Liberty takes a dealer-only wiper blade. To my knowledge there are no aftermarkets available. Ask the dealer for installation instructions when you purchase the blade.
The rear wiper blade on a 2004 Jeep Liberty is a dealer-only item and aftermarkets are not available. See your dealer.
19".
I do not see aftermarket replacement rear wiper blades nor rear wiper refills listed in the aftermarket wiper catalogs for the 2008 Jeep Liberty. This would possibly indicate that the rear wiper was a proprietary technology/design and you may have to go to the dealer for the parts and possibly labor. Before doing this (because its usually a little more expensive at the dealer), you may want to visit some internet forums and see if there's other ideas out there. Google "jeep liberty forums" then search "rear wiper" once in the forums. I'm sure there's rapport on this topic. As far as front wiper blades, The 2008 Jeep Liberty takes 19" replacement windshield wiper blades on both sides front and aftermarket wipers are available. Note, when buying wipers be sure to always lookup your vehicle make, model and year in the application guide book at the store, or now-a-days you can Google 'lookup wiper size'.