Question about 1995 GMC Sonoma

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Bad vibration in reverse

In reverse i have a bad vibration for a few weeks now also recently noticed a vibration in forward as well with a humming noise vibration is in the floor near the pedals and in the seat?

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This could be anywhere in the drive-line. Process of elimination would be the best approach. From your symptoms it sounds like the bad vibration is noticed at low speeds. There are many moving parts within this system. Were there and recent repairs performed? New tires could cause a vibration, if the tread is aggressive. Damaged wheel-bearings, defective components inside the rear differential (suspect low fluid level, damaged ring and pinion or bearings), defective U-joints, or internal transmission failure. You didn't mention if the truck was 2wd or 4wd. If the vehicle is a 4X4 then you will need to inspect the transfer case, the U-joints in the output shaft, and the front wheel bearings. I'm not sure how far you want to go with the diagnostics. Please write back if you have other questions or to give an update to how the repair is going, good luck.

Posted on Mar 27, 2014

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Check the drive shaft that runs from the front axle to the differential it runs right under the drivers floorboard

Posted on Mar 27, 2014

Testimonial: "i will check it again but found the u joints and bearing to be solid?...thank you"

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