Fuel System Problems. 2012 Jeep Grand Cherokee experiences a faulty fuel system and is stated on consumer reports as the worst issue with this model generation. The fuel pump relay goes bad, and no fuel will enter the engine. This problem comes with an enormous repair cost and can be challenging for some users. Jeep Grand Cherokee Engine Will not Start Due to Wireless Control Module Fault - 400 reports. 2014 Jeep Grand Cherokee . Most Common Jeep Grand Cherokee Problems. A prevalent issue among 2004 Jeep Grand Cherokee users is the improper functioning of the door harness. Several other electrical problems in this car include: a. Door harness is defective. Since 1998, the Grand Cherokee wj continues to meet expectations while surpassing those of its predecessor, the ZJ. 3 days ago · Your Repair Cost Forecast. Annual Service Costs for vehicles like yours. Your costs may vary. 108 K 120 K 132 K 144 K 156 K 168 K 180 K Miles $ 700 $ 1400 $ 2100 $ 2800. 144 K - 156 K. $ 2375 The 2015 Jeep Cherokee has 3059 problems & defects reported by Cherokee owners. The worst complaints are transmission, engine, and accessories - interior problems. 1 day ago · Your costs may vary. 24 K 36 K 48 K 60 K 72 K 84 K 96 K Miles $ 70 $ 140 $ 210 $ 280. 60 K - 72 K. $ 196. $ 279. Scheduled Maintenance Costs. Repair Costs. Calculations based on 12,000 miles 4 days ago · Annual Service Costs for vehicles like yours. Your costs may vary. 48 K 60 K 72 K 84 K 96 K 108 K 120 K Miles $ 200 $ 400 $ 600 $ 800. 84 K - 96 K. $ 563. $ 372. Repair Costs. Scheduled Its was a common issue (and well documented) pre-2014's 3.6L, but there was at least another 2014 person here who had his head replaced due to the ticking. Yours may not (or may) be the same because the head failure is usually (but not always) accompanied by MIL. If its running rough, it may be valve-train and not the head issue. 10. Blown head gasket. A blown head gasket is a severe and common cause of engine overheating in Grand Cherokee. The head gasket is a crucial component that seals the gap between the engine block and the cylinder head, preventing the mixing of engine coolant, engine oil, and combustion gases. Worst 2001 Jeep Grand Cherokee Problems #1: Knocking Noise, Cracked Piston 2001 Grand Cherokee Average Cost to Fix: $4,000 Average Mileage: 99,000 mi. Learn More #2: Gauges Don't Work 2001 Grand 7OxqBZl.