U and your U-Joints (Lubricate U-Joints)
January 19, 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.
Sterling Tire & Auto
34701 Van Dyke Rd
Sterling Heights, Michigan 48312
586-264-7775
Need Service?
More articles from Sterling Tire & Auto

Save Your Tires and Fuel: Why TPMS Is More Than a Warning Lightc
August 16, 2026
You know that little light on your dashboard that looks like a tire? Dont ignore it. Its a lot more than a warning light. Its trying to tell you something that can protect your tires, improve your fuel economy and keep your vehicle traveling safely down the road. Its called TPMS. The abbreviati... More

That Clunk Isn’t Normal: Why Your U-Joints Need Lubrication (Lubricate U-Joints)
August 9, 2026
If youve noticed a clunk when shifting from park to drive, accelerating from a stop or letting off on your accelerator, it may be your vehicle warning you about dry or failing U-joints. Those are small, critical components in your drivetrain that allow the driveshaft to flex as your suspension mo... More

Spend Less, Drive More: Go Synthetic
August 2, 2026
Oil changes are vital to your engine because clean oil is essential to make it efficient, reliable and last a long time. One of the big breakthroughs in oil technology is synthetic oil. It does a superior job of protecting modern engines and makes them perform better than conventional oil. The ... More
