I have a 2010 Jeep Grand Cherokee Laredo 3.7 V6 with 69,000 miles. It sometimes hesitates immediately after I start it up, and lasts for about a minute or two before it clears up and runs fine. Sometimes I get a CEL, and sometimes it flashes briefly. It usually resets soon after until it does it again later on. Weather conditions don’t seem to be a factor as it’s happened in the cold and when it’s warmer out. May also happen after the vehicle has been parked all day, or if it’s only been a brief time since it last ran. The only code I’ve managed to get is for a misfire in Bank #3. I’ve found this seems to be fairly common, but there appears to be a number of possible fixes. I have an extended warranty, but it’s $100 just to figure out what’s going on, and it may not be covered. I’d like to get some advice on a possible cause. Thank you.