A lot of noise upsetting your ride

Shawn Gilfillan • December 22, 2023

2009 Jeep Grand Cherokee 3.7 Liter - Differential Bearings Replacement


A recent situation that our client faced with their 2009 Jeep Grand Cherokee 3.7 Liter was a loud growling/humming sound coming from the rear of the vehicle while driving. This can be caused by failing pinion bearings inside the rear differential. Here at Automotive Magic, we have the expertise and equipment to diagnose and repair this sort of issue quickly and efficiently. Our expert technician used a stethoscope, just like a doctor, to confirm the problem and then disassemble the rear differential to replace all the bearings.



2009 Jeep Grand Cherokee 3.7 Liter - Differential Bearings Replacement


But, what causes the pinion bearings to fail internally? Lack of fluid changes is the primary culprit. Gear oil breaks down over time and becomes less protective and more abrasive, causing damage to the bearings. This is why it’s important to maintain all the fluids in your vehicle, including differential fluids, transmission fluid, transfer case fluid, power steering fluid, brake fluid, and coolant. 

At Automotive Magic, we understand the importance of maintaining all the fluids in your vehicle. Our technicians take fluid samples and determine their integrity to avoid costly repairs, and, also recommend changing the front differential fluid and transfer case fluid to avoid premature failure of those components. 


Our commitment to quality service and customer satisfaction has earned us our reputation in the Kenvil, and Lake Hopatcong, NJ community as skilled, honest, and affordable. With a wide range of services, including brake repairs, engine diagnostics, tire services, and more we can tackle the toughest auto repair challenges. From routine maintenance to major repairs, we have the expertise to get the job done right the first time. 


If you need reliable vehicle repair and maintenance services, look no further than Automotive Magic or Magic Lube and Rubber. We offer competitive pricing and a friendly, knowledgeable staff that is always ready to help. Call us today at (973) 366-3777 or schedule an appointment online, and experience the magic of Automotive Magic!


Shawn Gilfillan

Shawn Gilfillan is the dedicated owner of Automotive Magic in Kenvil, NJ. With over two decades of experience, Shawn has led his team in providing expert auto repair and service since 2003. 


In 2022, Magic Lube & Rubber was born in Lake Hopatcong, NJ. Committed to fostering strong community ties and supporting team development, Shawn prioritizes customer satisfaction above all. As a proud family man and long-time resident of Roxbury, NJ, Shawn brings a blend of professionalism and warmth to his business. 


Trust Shawn and his team for all your automotive needs with confidence and assurance.

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