Home › Forums › Stay Dirty Lounge › Technicians Only › 05 hummer h2 misfire › Reply To: 05 hummer h2 misfire June 21, 2021 at 10:37 pm #991233 Chris saumurParticipant I should also add that watching the live data misfire monitor, cylinders 5 and 8 misfire faster that you can even count out loud. It’s pretty bad