2008 silverado 2500HD extra cab axle ratio
#3
The easiest way is to check the RPO sticker (on door, door jamb, or glove box etc.). Looks for codes starting with 'G' (for example GU6). Look them up here:
GM RPO Lookup
GM RPO Lookup
#4
I'm here for the party
Rpo codes are going to be found in the glove box and that's only good if the glove box sticker is still there, or hasn't been changed and if the rear axle hasn't been swapped
#5
Good point.
Sometimes the axle tube will have a code stamped into it which you can look up. Could be hard to find under the rust though.
You can also open up the diff, and the number of teeth will stamped into the ring or pinion gear.
Or turn the wheels by hand like in the link Irish provided.
Sometimes the axle tube will have a code stamped into it which you can look up. Could be hard to find under the rust though.
You can also open up the diff, and the number of teeth will stamped into the ring or pinion gear.
Or turn the wheels by hand like in the link Irish provided.