However, the exact location can vary slightly depending on the engine (e.g., Cummins diesel vs. gasoline engine) and the year of the truck. To be absolutely certain, you should:
* Consult your owner's manual: This is the best resource for the specific location in your vehicle.
* Look at a diagram: An online parts diagram specific to your year and engine will show the location. You can usually find these on parts websites like Mopar's site or others selling Dodge parts.
* Use a visual search: Search online for "Dodge Ram 2500 vacuum pump location [year] [engine]" and look at images.
It's a good idea to visually inspect the area even with the other steps, as some variations can occur. The vacuum pump itself will often be a small, relatively round unit with hoses attached.