Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

Other materials:

Mazda 6 Service Manual: Control valve body installation
On-Vehicle Installation Caution Be sure to align the parking rod and the manual valve. 1. Install the accumulator springs and accumulators into the transaxle case. 2. Install the control valve body component. Tightening torque 7.8-10.8 N·m {80-110 kgf·cm, 70-95 in·lbf} Bo ...

Mazda 6 Service Manual: Inside Trunk Release Lever (Some models)
Your vehicle is equipped with an inside trunk release lever that provides a means of escape for children and adults in the event they become locked inside the trunk. No matter how careful adults might be with keys and locking their cars, parents should be aware that children may be tempted to p ...