Q: How Difficult Is It to Remove a Heater Core on Dodge Ram 1500 and Ram 1500?
A: Heater core removal is a challenging task for home mechanics. The entire instrument panel must be removed to access and remove the heater/air conditioning unit. The air conditioning system must be discharged, the battery cable(s) disconnected, and the cooling system drained. The heater hoses and air conditioning lines must be disconnected, and the nuts retaining the heater housing on the firewall removed. The instrument panel and air ducts must be removed. The lower bolt and two nuts retaining the heater housing must be removed, followed by the heater housing assembly. The foam insulator from the water pipe flange must be removed, and then the flange detached. Reinstall all components in reverse order, being careful not to pinch any wiring harnesses. Refill the cooling system, start the engine, and check for proper operation. Have the air conditioning system evacuated, recharged, and leak-tested by a professional shop.