I hear a whine, grind, or clunk that changes with speed
A noise that follows your speed usually comes from a part that turns with the wheels: the transmission, a differential, a bearing, or an axle. A whine often means low fluid, a tired pump, or worn bearings or gears, and a clunk when you take off or let off the gas is often a broken mount or a worn joint between the engine and the wheels. Tires and wheel bearings can sound a lot like a transmission, so finding the exact source comes first.
What to do right now
- 1Notice what the noise follows. Tell us if it rises and falls with road speed, and if it also happens when you rev the engine in Park. Those two answers cut the search in half.
- 2Look where you park for red transmission fluid, or thick gear oil with a strong smell near the axles. A whine plus a leak means the level is dropping.
- 3A whine: book it soon and drive gently. Grinding or loud clunks: do not drive it until someone looks. Have it towed instead.
What it usually is
Transmission diagnostics
We road test it, with you along if that helps, and pinpoint the noise on the lift before anything gets opened up. Tires and wheel bearings get ruled out first.
See the serviceTransfer case and differential
A whine or howl that rises and falls with road speed is a classic sign of worn differential bearings or gears, often from low or old gear oil. Caught early, new bearings and seals can fix it.
See the serviceTransmission repair
Inside the transmission, a failing pump or worn bearings and gears make a whine or a grind. If the fluid shows metal, we tell you straight whether a repair makes sense or the wear means a rebuild.
See the service