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**67sss** · 09-24-2021, 10:34 AM

Pulled my Vin number and decoded the options. I know I have a 3:73 rear-end ratio. How do I tell what size rear-end I have? 9.5, 10.5 or 11.5? I'm getting ready to replace the parking brake pads and a axle seal. Tia

09-24-2021, 10:34 AM	#1
67sss Registered User Join Date: Nov 2002 Location: Mt. Vernon, WA.. Posts: 2,322	2004 GMC 3500 rear end size question Pulled my Vin number and decoded the options. I know I have a 3:73 rear-end ratio. How do I tell what size rear-end I have? 9.5, 10.5 or 11.5? I'm getting ready to replace the parking brake pads and a axle seal. Tia