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I have a 2003 GX470 with around 155k miles. It recently started to get a front end shake which isn't horrible, but you definitely feel it pretty good. I know the rear air suspension has a small leak, but the bags stay inflated for the most part. It feels like it is coming from the front more than the rear. I brought it to the dealership and they said something about the CV boots and something with the steering column I believe. I don't have the sheet they gave me to read exactly what it said. Could either of these be the reason for the front end shake? Has anyone else experienced this and have some insight? I sure as heck do not want to pay the dealership to fix either of these as they charge an arm and a leg.

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If the vibration is when the vehicle is driving along then it could be a damaged/worn Constant Velocity Joint or bent driveshaft. Other areas it could be are Wheel Bearing or even a lump in one of the tyres (jack up each corner so the wheel is off just off the ground and spin the wheel slowly while looking between the ground and the tread area to see if there is any deviation within the clearance indicating a deformed tyre or bulge in the tread area. Also check the sidewalls for damage)

If the vibration occurs when braking then the rotors are probably warped....easily checked with a Dial Test Indicator.

Let us know what you find

Cheers  Trevor

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Should this part of my boot be sealed? Looks like a lot of grease around it. May have a serious leak and it may have been there for a while causing more issues to my axle. This may be part of my problem

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There certainly shouldn't be any grease or oil around there but looking at the quantity it doesn't look serious enough to cause a vibration through the vehicle.

Even so, it would be worth keeping on top of and cleaning off to see exactly where it is coming from.

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Josh; I had the same issue with vibration at 65 mph with my 2005 with 130K miles. I thought I needed new front shock absorbers - the tire guy at the dealership recommended road force balancing for all wheels.

I had them road force balanced, and all vibration issues went away.

No amount of conventional balancing cured it; $160 and well worth it.

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The GXs usually have a bad vibration issue due to high road force in the wheels. Especially after you've gotten a wheel rotation and then start noticing the virbration. But Yes, by simply balancing the wheels and correcting the road force, it will take the vibration away. Start with the cheaper fix before you get into repairing the cv boots or performing any type of suspension work.

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Regarding the leaked grease from the CV boot, I discovered the same issue about  7+ years ago. There was no clamp there so I got a CV boot clamp and a tool to install one. SInce then I haven't noticed any problem. In addition to this boot issue, my RX suffered the same  years ago and that eventually lead to failure(making sound when turning the wheel)  so I got it replaced. So I wouldn't be surprise if that could be the culprit.  Another thing, if your tires are worn pretty low, you may feel the shake more so than a newer tire. Its been my experience that after I replaced my tires(about 4 sets since I owned my GX), the shake goes away or not as apparent. 

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