I went through all the clicks and creaks on my Trance-e systematically and here what I found.
Cleaning and rotating all the suspension bearings made no difference but it is still a good thing to do.
The lower head bearing on the streets tube is slightly undersize at 51,8mm. I fitted a 52mm bearing and it silenced the string creak.
The click that you hear when pedaling is the beginning of a creak that will eventually drive you mad if you don't fix it. Good news however is that you can fix it at no cost on a couple of minutes. The LBS told me Giant sent out a message that a thin aluminium washer needs to be fitted between the game and the motor. That was not the case. After a thorough inspection I noticed that there are two floating mounts on the left side of the motor when you remove it out of the frame. Your problem is that one or both of them have seized in the sleeve where they fit inside the motor. Gently pry it out of it is stuck. Some WD40 or Q20 will assist in getting it out. Then clean it thoroughly with some solvent or even very thin sandpaper. Out some Q20/WD40 or thin grease on and push it back into the sleeve. When you put the motor back into the game and tighten the mounting bolts the creak will be gone. It was the single most elusive creak I've ever had to deal with but also the most satisfying to deal with.
It is a really nice feature of the engine mounting as it allows the frame to expand and contract around the motor while keeping it firmly in place. It just needs to be properly lubricated and it will remain silent and solid.
If you haven't solved your clicking noise when pedaling yet, chances are this is the culprit. Let me know if it worked for you ?
