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: Bonnet adjustment
Gap Adjustment 1. Remove the front fender. 2. Loosen the bonnet hinge installation bolts and reposition the bonnet. 3. Tighten the bolts. 4. Verify that the gap between the bonnet and the body is within the specification. Clearance a: 2.5-4.5 mm {0.08-0.17 in} Height Adjustment 1 ...

Mazda 6 Service Manual: Liftgate adjustment
1. Measure the gap and height between the liftgate and the body. 2. If not as specified, loosen the liftgate hinge installation bolts or the liftgate striker installation screws, and reposition the liftgate. Clearance a: 3.0-7.0 mm {0.12-0.28 in} b: -1.0-3.4 mm {-0.04-013 in} c: 2.8-5.2 mm ...