To be precise, you'll likely need to:
1. Remove the glove box: This usually involves releasing a few clips or screws. Consult your owner's manual for the specific procedure for your year and model.
2. Locate the filter: Once the glove box is out, the cabin air filter should be visible. It might be in a dedicated housing or simply slotted into place.
Again, always consult your owner's manual for the most accurate and detailed instructions for your specific Dodge Ram 2500 model year. The manual will have diagrams and specific steps to avoid damaging anything.