GM 52498633 Core,Heater

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To remove the air conditioning system, start by discharging it and disconnecting the battery cable at the negative terminal. Then, drain the cooling system and remove the heater hoses and air conditioning lines from the fittings at the firewall, making sure to plug the lines to prevent coolant spillage and contamination. Next, remove the instrument panel assembly and the instrument panel carrier and heater/air conditioning assembly. Separate the HVAC module from the instrument panel carrier and then remove the screws to separate the HVAC module halves and carefully remove the heater core. For installation, simply reverse the removal steps and refill the cooling system. Finally, have the air conditioning system charged by a professional and check for proper operation by starting the engine.