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: Lane-Change Signals and Three-Flash Turn Signal
Lane-Change Signals Move the lever halfway toward the direction of the lane change—until the indicator flashes— and hold it there. It will return to the off position when released. Three-Flash Turn Signal After releasing the turn signal lever, the turn signal indicator flashes three times ...

Mazda 6 Service Manual: Purge solenoid valve removal/installation
1. Disconnect the negative battery cable. 2. Remove in the order indicated in the table. 3. Install in the reverse order of removal. Vacuum Hose Installation Note Attach the vacuum hose onto the purge solenoid valve until it contacts the stopper. Evaporative Hose Installation Note Attach ...