It’s been a while since the truck has acted up. Decided last week to go ahead and buy a new ISC motor from Rockauto (ACDelco) and put it on since the old one would stick and stumble when idling around. I installed the new one and adjusted it accordingly (2750-2850 rpm when the ISC and CTS are unplugged). However, it sounds like it idles really low and randomly it would bottom out and click when shut off. Did I not adjust it properly or is it another issue with it?