GM 20929423 Condenser Assembly, A/C

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To replace the condenser in an air conditioning system, the first step is to have the system discharged. Then, locate the replaceable desiccant bag inside the condenser at the bottom right and remove it by taking out the threaded plug. On supercharged 6.2L V8 models, the charge air cooler radiator needs to be removed. Disconnect the pressure cycling switch and the refrigerant inlet and outlet pipes from the condenser, and cap the lines to prevent contamination. Remove the fastener for the air conditioning line mounting clip and move it away from the fan shroud. Remove the condenser mounting bolts and take out the condenser, storing it with the line fittings facing up to prevent oil drainage if it will be reinstalled. If installing a new condenser, pour one ounce of the correct type of refrigerant oil into it before installation. Before reconnecting the refrigerant lines, coat new O-rings with refrigerant oil, install them in the fittings, and tighten the condenser inlet and outlet nuts to the proper torque specifications. Finally, reverse the removal steps for installation and have the system evacuated, recharged, and leak tested by a professional shop.