I have an 88 Blazer. Sometimes it just dies without any engine studder or any indication that it is going to die. Other times the engine light comes on and the truck runs really sluggish. I have to floor it to gain any speed. Once I turn the truck off and re-start it, she runs fine. I checked for an engine code but all it's givng is a 12, nothing after. I don't have any clue of what the problem is or what to look for, so any suggestions or experiences would be a big help! Thanks!!