Left side neck always crack with any movement i make, neck and shoulder blade always very stiff, why?

Benign: I am frequently asked about neck/spinal cracking and invariably it is a benign condition, similar to cracking knuckles. In other words, don't worry about it, especially if you've had an MRI showing that your neck is ok (i'm assuming that based on the MRI listed in your procedures). Your best best is persistent physical therapy, being active, eating a healthy diet, quitting smoking if applicable.