Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 84 Suburban Idle issue › 84 Suburban Idle issue April 7, 2012 at 11:00 am #440145 dreamer2355Participant Here is Eric’s video on vacuum leaks – http://www.youtube.com/watch?v=9CPqbaSg … h5ma49U%3D I would also check for fuel pressure. When was the last time the vehicle was tuned up?