Disconnect the heater hoses under the hood. Open the glove box and disconnect the cable that holds it from opening too far. Now it will open completely and just lift off the bottom hinges. Behind it you'll see a plastic panel that is held in place by about 6 or 8 screws. Remove the screws and slide the panel toward you, then down and out. The heater core is now ready to remove. This is one of the easiest fixes on these rigs.