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.
Multiplex Integrated Control System Description
Body Controller Area Network (B-CAN) and Fast Controller
Area Network (F-CAN)
The body controller area network (B-CAN) and the fast controller area network
(F-CAN) share information between ...
Block and Piston Inspection
Remove the crankshaft and the pistons.
Check the piston for distortion or cracks.
Measure the piston skirt diameter (A) at a point 16 mm (0.63 in)
from ...
Using the Key*
Insert the key in the cylinder to lock and
unlock the tailgate. ...