1. Preparatory Steps:
- Ensure the engine is cool and the battery is disconnected.
- If necessary, raise the front of the truck and provide adequate support.
2. Remove Under-Dash Components:
- Remove the lower instrument panel by unbolting and pulling it down.
- Remove any other components obstructing access to the heater core.
3. Drain Coolant:
- From under the hood, identify and loosen the coolant drain plug on the radiator.
- Open it and allow the coolant to drain into a suitable container.
4. Disconnect Hoses and Lines:
- Locate the heater core hoses inside the cab, usually under the dash or near the center console.
- Carefully loosen and remove the hose clamps or couplings.
5. Remove the Heater Core Cover:
- After draining the coolant and disconnecting the hoses, locate and remove the heater core cover. It may be held in place by bolts or screws.
6. Extract the Old Heater Core:
- Carefully remove the old heater core by pulling it out of the core case.
7. Install the New Heater Core:
- Check the condition of the seals around the inlet and outlet tubes of the new heater core. Replace them if necessary.
- Gently insert the new heater core into the core case, ensuring proper alignment.
8. Reinstall the Heater Core Cover:
- Reinstall the heater core cover and secure it using the appropriate bolts or screws.
9. Reconnect Hoses and Lines:
- Reconnect the heater core hoses and lines previously disconnected, making sure the connections are tight and secure.
10. Replace Coolant:
- Refill the radiator with the appropriate amount and type of coolant.
11. Test the System:
- Turn on the heater fan to the highest setting and ensure warm air is coming out of the dashboard vents.
12. Reattach Under-Dash Components:
- Reinstall the under-dash components that were removed earlier.
13. Reconnect the Battery:
- Reconnect the battery.
14. Test Drive:
- Take the truck for a test drive to ensure proper heating functionality.
Note:
- Consult your vehicle's service manual for specific instructions and diagrams related to your particular Dodge Ram 2500 pickup model and year.
- If you encounter any challenges during the process, it's advisable to seek assistance from a qualified mechanic or consult professional repair resources.
