U and your U-Joints (Lubricate U-Joints)
April 17, 2025
If your vehicle’s power goes to the rear wheels, then you have something called U-joints in the drivetrain. U-joints are connectors that allow the rotating power from your vehicle’s engine to deliver its power through a driveshaft to make the rear wheels rotate. You need U-joints because the surfaces you drive on aren’t perfectly flat, and the driveshaft has to allow for some flexibility when you are traveling over uneven surfaces.
As you can imagine, the U-joints have to move and flex a lot as your vehicle is going down the road. They have bearings in them to allow that flexibility, and those bearings are lubricated when your vehicle is made. Some U-joints have lifetime lubrication and are not designed to be serviced. When they fail, they have to be replaced. Others have grease fittings on them that need periodic lubricating by a technician at intervals recommended by your vehicle’s manufacturer.
There are signs you can look for that your U-joints need attention. You may hear a clunk when the gears shift into drive or reverse. You may feel your vehicle vibrate as you move down the road. Other signs are leaks at the back of your transmission or a banging sound right before you lose power. Sometimes, though, if you wait until you notice these symptoms, the U-joints may already be damaged.
That’s why it’s important that your vehicle’s U-joints be periodically inspected and lubricated. At the same time, a technician should thoroughly inspect the driveshaft and other connected components.
Keep your U-joints in good shape, and both of U will continue to enjoy years of reliable transportation.
Car Fix Libertyville
311 South Milwaukee Avenue
Libertyville, IL 60048
8478738044
http://carfixlibertyville.com
Need Service?
More articles from Car Fix - Libertyville

Line Them Up: Wheel Alignment Service at Car Fix Libertyville
April 26, 2026
Hello Libertyville! Let's talk about alignment. One of the most important parts of preventive maintenance for your vehicle is keeping the wheels in alignment. Poor alignment causes your tires to wear unevenly, which can significantly reduce their lifespan. This means you will have to replace th... More

Automotive Tips from Car Fix Libertyville: Wiper Blades – Signs of Wear
April 19, 2026
90% of our driving decisions are based on vision. Anything that impedes your vision can affect your driving safety including a dirty windshield. In that sense, your wiper blades are an important safety system. Most Libertyville drivers will wait until their wipers have failed before they replace... More

The Puzzling Puddle (Leaks Under Vehicle)
April 15, 2026
Ever notice a little spot of liquid under your vehicle after you've parked in your driveway or garage? It may have been something as simple as water left from air conditioning condensation. But then again, it could be a sign that there's trouble brewing in one of your vehicle's systems. You can... More
