Do you have the 1.5 or the 2.0 ? The tsb covers the 1.5
Mine is the 1.5L.
The frustrating thing for me is, the problem is very intermittent. It doesn't do it on every hard take-off. Even when it does do it, it's only with hard acceleration which I don't do often. For these reasons, I'm not even sure I want to pursue it with the Mazda dealer I just bought this used equinox from.
This dealer chain does have a Chevy store, but it's ~20 miles away. I have a feeling they're just going to give me the "cannot duplicate concern" because no codes are present and nothing is obviously broke. Even if they did follow the TSB, are they really going to install a pair of genuine GM CV shafts under warranty, or are they going to use junk aftermarket shafts on a ~35K mile vehicle. Like I say, all I have is the remainder of the 5/60 powertrain and the 3/3000mi used car warranty.
I feel for your situation too, with yours being a the 2.0T Has yours changed at all? Are you going to live with it for now? I don't think it's anything harmful for the vehicle, other than maybe putting a bit more stress on the engine mounts and being annoying for the driver. Who knows.