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

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Mazda 6 Service Manual: Side Air Bags
The side air bags are mounted in the outboard sides of the front seatbacks. When the air bag crash sensors detect a side impact of greater than moderate force, the system inflates the side air bag only on the side in which the vehicle was hit. The side air bag inflates quickly to reduce injury ...

Mazda 6 Service Manual: Joint shaft disassembly/assembly
1. Disassemble in the order indicated in the table. 2. Assemble in the reverse order of disassembly. Joint Shaft Disassembly Note Disassemble the joint shaft. Bearing Disassembly Note Remove the bearing using the SSTs. Dust Seal (Right) Assembly Note 1. Apply grease to the new dust se ...