Yes it could be a slightly stretched timing chain. I wouldn’t be too concerned about that though. There are many notches on the reluctor wheel for the crank sensor, doesn’t take much to throw them out of whack. I’d get the relearn done and go from there. Not guaranteeing that’ll fix it for sure but I’d definitely try that first if you can’t feel any misfires at all. It has to be done with a scan tool, not sure if some of the aftermarket ones can do it or not or if you have to have it done at a dealer with the Tech2.
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