Hello everyone. Ok I have an 05 trailblazer and when i start it I get a little rough start like a little vibration but after a min or 2 warming up it stops and runs great. Maybe its nothing ? I don't know. It only does that when I start it.
Could be a number of things fan clutch, idler pulley, tensioner &pulley, belt, motor mounts. What's your milege and how much of this stuff have you already replaced?
Bought an 05 Envoy 150K miles, very neglected. Did all the usual things but I too cant get that last little vibration out. Idles at 650 and has new motor mounts. Wondering about the MAP sensor. Took it off and found carbon dirtying up the sensor end. No codes.