I discovered that my 2000 GMC project truck had the rear axle swapped at some point and the rear gears did not match the front. To solve this I got a used complete rear axle from a junk yard and swapped it into my truck. You can tell which gears you have by looking at the sticker in the glove box. There will be a GT or a GS code in the list which tells you which gears you have. Mine had a GT4 code which meant I had 3.73 gears. The new axle also happened to have an Eaton locker which is code G80, so the truck got an upgrade.
19 окт 2018