L Lw64 New member Joined Jan 8, 2023 Messages 2 Reaction score 0 Points 1 Jan 8, 2023 #1 I have a 2005 Silverado and need to determine the gear ratio of my diffs. The RPO sticker has been removed. Where are the casting #s on the diffs 10 bolt rear 8.25 front?
I have a 2005 Silverado and need to determine the gear ratio of my diffs. The RPO sticker has been removed. Where are the casting #s on the diffs 10 bolt rear 8.25 front?
zora Staff member Joined Apr 24, 2012 Messages 5,519 Reaction score 139 Points 63 Jan 8, 2023 #2 Bring your VIN to a GM dealer and see if they can look up the RPO codes.
L Lw64 New member Joined Jan 8, 2023 Messages 2 Reaction score 0 Points 1 Jan 9, 2023 #3 Thanks that was my next choice to cross reference the vin. I was hoping to be able find casting #s
