The 2007-2010 Chevrolet and GMC Suburban takes a special 12" rear wiper blade. (also 22" replacement windshield wiper blades on both sides front).
What are you removing? The blades or the arms
The 2001 Chevrolet Suburban takes 22" wiper blades on both sides front and a 16" rear wiper. 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.
22"
How do you remove and replace wiper switch on 2002 Chevy Cavalier
wiper motor or the bolts holding it tight.
Mounts on top of the wiper motor
The 2004 Chevrolet Silverado takes 22" replacement windshield wiper blades on both sides front.
A person can get the old wiper blades off the wiper arms of a Chevy Astro Van by pressing the release latch and sliding them out the end. This allows the blades themselves to be changed without removing the whole arm.
The 2003 Chevrolet Malibu takes 22" driver side and 19" passenger side replacement windshield wiper blades.
For starters try activating the wiper switch...
This particular year has a wiper change mid-year. See sources and related links below for more information.