Check the play of the release bearing by spinning it by hand. If there is excessive play or noise, replace the release bearing.

NOTE: The release bearing is packed with grease. Do not wash it in solvent.
Fluid Locations
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Secondary HO2S Replacement
Special Tools Required
O2 Sensor Wrench Snap-on S6176 or equivalent, commercially available
Disconnect the secondary HO2S connector (A).
Raise the vehicle on a lift.
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Driver's Seat Position Sensor Replacement
Removal
NOTE: Do not turn the ignition switch to ON (II), and do not connect the
battery cable while removing the driver's seat position sensor.
Do the battery terminal disconnection ...