Skip the auto shop - Our mechanics make house calls

Q: Strong vibration in the rear end

asked by on

I have a strong vibration, like hitting potholes, in the rear end of my truck. When under light acceleration between 40 and 50 mph but hard acceleration is fine. Also I can hear a loud squeak when I'm backIng up. I've been told my u joints need to be replaced but I'm trying to get other opinions.

My car has 128000 miles.
My car has an automatic transmission.

A: The noise and vibration sound like the u-jo...

The noise and vibration sound like the u-joints are bad from what you've described, as they will cause all these issues if so. Inspect the u-joints and you will be able to see rust around the cups or see the bad joint itself. If the joints are not bad then you have a pinion bearing in the rear end going bad. The seal will start to leak if it is bad.

If you need some assistance with these checks, consider enlisting a certified mechanic who can diagnose the vibration you're experiencing and fix it accordingly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: I was driving and then all of a sudden, my oil pressure went down and a loud knocking started.

Hi, thanks for writing in. The only way to verify if the engine is damaged is to do at least a partial inspection of the internals. The oil pan and/or valve covers should be removed to inspect the camshaft sensors,...

Q: My steering wheel vibrates an i have a lost of power? Seems like engine is shaking

Hey there, thank you for asking about your 2005 Cadillac SRX. This is a known issue with the Cadillac SRX and is related to the steering wheel sensor. This sensor monitors the direction the wheels are turning. When it senses...

Q: How do I defrost the windows?

The Defrost helps you defog your windshield by using heated air from the heater onto the windshield. To turn the Defrost on: Press the Defrost button located on the climate control panel. Press the Rear Defroster/Heated Mirrors button and...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.