This issue started a while back and can be viewed here
http://www.grandprixforums.net/threa...down-sometimes
Today no matter how many times shut off my car (2005 comp g) it will not run normal. The car wants to bog down and is jerky while accelerating. There are no codes showing on my scan gauge. currently but last week it through p0300 random multiple misfires. Watching the misfires today it was showing cyl. 2,4,6 were randomly missing. I replaced the ICM to no avail.
Any ideas whats broken?