45posts · Joined 2016. #5 · Nov 25, 2016. I purchased the vehicle April of this year (2016). There seems to be some confusion both at the dealer & with Jeep customer service as they both seem to think the service bulletin is ONLY for unsold vehicles. The Diesel Supplement to the Manual for the vehicle has been updated to reflect the Forthe last several years, the Jeep Grand Cherokee has been the leader among mid-size, off-road SUVs. Legendary Jeep off-road equipment, luxury-like interior finishes, sharp exterior styling and powerful V8 engines have enhanced the appeal of this trusty truck significantly. With the pump-busting 3.0L V6 EcoDiesel engine now available OnJanuary 12, 2017, owned or leased an eligible model year , or 2016 Ram 1500 or Jeep Grand Cherokee 3.0-liter diesel vehicle Registered (as defined in Paragraph 2.60 of the Class Action Agreement) in the United States or its territories (an “Eligible Vehicle,” defined more fully in Section 2.35 of the Class Action Agreement); or 4 Poor gas mileage. Some drivers report low gas mileage issues from old Jeep Cherokees. One driver who owns a Cherokee with MPG of 21 to 28 miles, an average of 25 miles, said the Cherokee seems unbelievably poor gas mileage. Jeep estimates the gas mileage of the new Cherokee to be 24 combined city and highways. Thisissue isn't just a Jeep WK2 diesel issue. BMWs have the intercooler fail all the time. It is the same concept of using coolant to cool the oil in the heat exchanger. 2015 4X4 Grand Cherokee Limited 3.0 Diesel 2016 BMW X3 Turbo 2.0 2000 C5 Corvette ragtop 6 speed 550HP 2022 Storyteller Stealth 3.0 Diesel. Save Share. Reply The2016 Jeep Grand Cherokee range of configurations is currently priced from $15,990. Our most recent review of the 2016 Jeep Grand Cherokee resulted in a score of 6.6 out of 10 for that particular example. Carsguide ECOdiesel problems. Fully Developed tuning options for Jeep Grand Cherokee EcoDiesel. Reactions: chadg2 and bardwell02. Save Share. Reply Quote. C. coinoprus Discussion starter 2015 4X4 Grand Cherokee Limited 3.0 Diesel 2016 BMW X3 Turbo 2.0 2000 C5 Corvette ragtop 6 speed 550HP TSB#68253994A$. Date Announced: MAY 11, 2016. NHTSA ID: #10141263. Integrated Center Stack If vehicle is found within 50 mile radius of the Detroit Metro area please hold vehicle and contact Hafqvpt.