Update: The issue is fixed, although now there is the slightest whining noise that changes with engine RPM. It may be completely normal though... almost imperceptible. Here's what I did since last post:
1. Replaced both cam phasers and lower timing chain sprocket
2. Replaced balance chain as...
Gotcha, sounds like we both have the same issue then. Will let you know any updates on mine too. My next steps are probably to replace the balance chain and sprockets just in case, replace the phasers and other timing chains sprockets, and see if any of that resolves it. @corvairbob I thought of...
I recently replaced the timing chain on my 2012 Equinox with a Cloyes kit and have the exact same issue you do. It sounds smooth when it starts up, but once it warms up, ESPECIALLY when it is in Drive or Reverse, it rattles and runs kind of rough. My original issue was timing chain noise due to...
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