On my 2011 Chev. Avalanche, while driving down the road at 60 mph, the stabilitrak, traction control and service engine lights come on, and truck runs a little rough. two minutes later all service lights go away and the truck runs smooth. Next morning I start drive to work, at first everything is fine, and then the service lights come on again and the truck I running rough. I take to the Chevy service shop, they say #4 is miss firing, they check coils and then end up replacing spark plugs. I pick up get less than a mile down the road, then it all happens again, stabilitrac, traction control and service engine lights come on. I turn around, return to Chevy service and they do a quick check and say #4 is miss firing again. Still waiting for them to fix. This seems to be a common problem. Has GM resolved this issue.