A: To remove the AC system, start by discharging the refrigerant and disconnecting the negative battery terminal. Remove the drive belt and raise the front of the vehicle, securing it with jack stands. Disconnect the compressor clutch electrical connector. For 4-cylinder models, remove the bolt retaining the refrigerant lines to the compressor. For 2002-2003 V6 models, remove the interfering oxygen sensor and loosen the hose retaining bolts. For 2004 and later V6 models, remove the retaining bolt from the hose connector and support the front of the subframe. Lower the engine assembly slightly. Remove the compressor mounting bolts and then the compressor itself. To install, transfer the clutch if necessary and adjust the oil level if using a new or rebuilt compressor. Follow the reverse steps of removal, using new o-rings for the line fittings. Tighten the subframe mounting bolts and reconnect the battery. Finally, have the system evacuated, charged, and leak tested.