Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 04 gmc envoy 5.3l › Reply To: 04 gmc envoy 5.3l October 13, 2020 at 5:11 am #986689 Richard KirshyParticipant Generally, @ operating temp and idle g/s usually ~ equals the engine displacement. In your case ~ 5 – 6 g/s