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: Underbody Maintenance
Road chemicals and salt used for ice and snow removal and solvents used for dust control may collect on the underbody. If not removed, they will speed up rusting and deterioration of such underbody parts as fuel lines, frame, floor pan, and exhaust system, even though these parts may be coated ...

Mazda 6 Service Manual: Climate control unit installation
1. Pass each wire through the following routes then connect to A/C unit. (Manual air conditioner) 2. Connect the climate control unit connectors. (Manual air conditioner) 3. Install the climate control unit to the center panel. (Full-auto air conditioner) 4. Install the center panel. 5. Ad ...