7 Signs Your Transmission Is Failing
Transmissions rarely fail without warning. Most give you hints first: a strange noise, a shift that feels off, a spot on the driveway. Catching these early can be the difference between a smaller repair and a full rebuild. Here are seven signs worth taking seriously.
1. Slipping gears
The engine revs higher than normal but the vehicle doesn't speed up the way it should. Or the vehicle seems to shift on its own. Slipping often means something inside the transmission isn't gripping the way it should.
2. Delayed or rough shifting
There's a pause when you move the shifter into Drive or Reverse, or the shifts feel harsh and jerky. Both can point to worn internal parts or low fluid.
3. Leaking fluid
Fresh transmission fluid is usually red or pink. If you see red or brown fluid under your vehicle, don't ignore it. Low fluid can cause overheating and damage that grows over time.
4. A burning smell
Overheated transmission fluid can smell burnt. If you notice it, especially after towing or driving in traffic, have the fluid and the transmission checked.
5. Whining, humming or clunking
New noises matter. Whining or humming while the vehicle is moving, or a clunk when it shifts, are all reasons to get a diagnosis.
6. Shuddering or vibration
A shake or shudder while accelerating or at steady speed can come from the transmission, and sometimes from related drivetrain parts. A proper diagnosis tells you which.
7. Warning lights
A check engine or transmission warning light can signal a shifting or sensor problem. Some vehicles also go into a protective "limp mode" that limits speed and gears.
What should you do?
Don't keep driving and hope it clears up. Continuing to drive with a slipping or overheating transmission can turn a repairable problem into an expensive one. Write down what you're noticing (when it happens, what you feel, what you hear) and call the shop.
At Valley Transmissions, we start with a diagnosis so you know what's going on before any decisions are made. Rebuilt units carry a 2-year/24,000-mile warranty, and purchased units carry 3 years/100,000 miles.
Call 825-5020 or request an estimate. We serve Reno, Sparks and Northern Nevada.




