Hello All, I'm new to the forum and looking for some guidance. I am looking to purchase a differnent suburban/yukon xl and was looking for 4.10 gears. I currently have a 2001 Suburban with 3.73 gears and I am not all that satisified with it's towing capabilities. My personal opinion is you need 4.10 gear with the 5.3 vortec or go with the 6.0 or 8.1 (prior to 2006). I have been looking for an 2500 with the 8.1 for quite awhile and haven't had much luck for what I want. So...I am now looking for the new body style 07-10 suburban/yukon xl with the 5.3 with the 4.10 gears. Here is my question. How can I easily tell if a burb or yukon has the 4.10 gears? Is there a way to tell from the VIN or do I have to call the local GM dealer? Are they hard to come by? Thanks in advance.