1. Your Owner's Manual: This is your first stop. While it might not have a detailed exploded diagram, it often contains basic instructions and may show the general location of components.
2. Repair Manuals: These are far more detailed. Look for a repair manual specific to your 2005 GMC Suburban. Popular brands include Haynes and Chilton. These manuals contain step-by-step instructions *with* diagrams and illustrations showing the brake system layout and how to access and replace the pads.
3. Online Repair Resources: Sites like YouTube offer many videos demonstrating brake pad replacement on similar vehicles. Search for "2005 GMC Suburban rear brake pad replacement" and you'll likely find several options. *Caution:* Be sure to verify the year and model match your vehicle exactly, as procedures can vary slightly.
4. Automotive Parts Stores (e.g., AutoZone, Advance Auto Parts): Many parts stores have online resources or in-store diagrams that may help. They often have diagrams showing parts and their locations, but these are generally less detailed than a repair manual.
Important Note: Brake work can be dangerous if not done correctly. If you're not comfortable working on your brakes, it's best to take your Suburban to a qualified mechanic. Brake failure can lead to serious accidents.