Question about 2003 Chevrolet TrailBlazer

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2003 envoy, low speed harmonic vibration in front end

Betwee 25 and 50 mph there is a "high pitched" vibration that can be felt on the floor and in the steering wheel. The vibration is accompanied by a moderate "whirring" sound like the tranny wants to shift to a higher gear, BUT the tranny shifts smoothly and nice, that is just the description of the sound. I have heard everything from tires, (Firestone Destination LE) to sway bar links (which I know I need) towheel bearing. I hope you can help. Ken Bulbrook

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  • yadayada
    yadayada May 11, 2010

    I would suggest u take this to a dealer for diagnosis.

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Hello have u rotated the tires front to rear then drive and see if u still have the noise and vibration if drive yes while driving slowely turn the steering wheel left to right just a small amount if the noise changes its probably a front wheel bearing if that doesn.t help drive the truck till you get the vibration then let up on the gas pedal does the noise go away if so you might have a bad u_joint but do the tires first how many miles???????

Posted on Feb 02, 2009

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Low pitch whirring sound coming from front end when above 30 mph


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