Original post by: jess ,
On the front axle the ratio is on the side of the differential, on the rear axle the ratio is marked on the top of the diff. You can also take the numbers stamped on the input shaft of the rear diff, divide the first number by the second and that will give you the ratio. Flr marks the ratio on a tag just under the fuse panel on the pass. seat. Sit in the passenger seat, and pop off the plastic panel with a flat screwdriver. Your ratio will be there towards the bottom right of the sticker. This is only on the century, cascadia, columbia and coronado models. The fld and classic models are marked inside the glove box.