Can't really answer the question without vehicle year. See sources and related links below to look it up yourself.
The 1989 GMC G-Series Vandura takes 16" replacement windshield wiper blades on both sides front.
The 2001 GMC Jimmy wiper blade sizes are 20" wiper blades on both sides front and a 13" or 14" 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.
The 2007-2010 Chevrolet and GMC Suburban takes a special 12" rear wiper blade. (also 22" replacement windshield wiper blades on both sides front).
The 1993 GMC Sonoma takes 16" replacement windshield wiper blades on both sides front. Note however, when buying wipers be sure to always lookup your vehicle make, model and year in the application guide book at the store
The 2000 GMC Sierra 1500 takes 22" replacement windshield wiper blades on both sides front. Be sure to lookup exact part numbers by vehicle make, model and year for the brand of wiper you decide to purchase. See related links below.
The 2005 GMC Envoy wiper blade sizes are 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.
The 2003 GMC Sierra 1500 Pickup takes 22" 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.
The 2007 GMC Acadia wiper blade sizes are 25" drivers and 21" passenger side wiper blades with fairly specialized attachments. 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.
The wiper motor is a non repairable part, just replace it.
The 2002 GMC Sierra Series Pickup has the most common hook arms. There should be a little tab on the wiper blade attachment which is mounted is inside the arm hook. Press the tab and pull the wiper blade assembly out of the arm hook. Rotate the blade if you need additional space for the hook arm to clear the wiper blade attachement. Additionally, the 2002 GMC Sierra Series Pickup takes 22" replacement windshield wiper blades on both sides front and for installation, the replacement wiper blades will come with simple-to-follow, step-by-step, illustrated instructions.
per vehicle specs on a 1998 gmc jimmy 4x4, the correct size tires are 235/70/15
The 2007 GMC Sierra takes 22" wiper blades on both sides front. See sources and related links below for more information. Since there are currently 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.