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find out my problem! help~

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Old 10-09-2011, 12:01 AM
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Default find out my problem! help~

at around 60 mph i get a pulsating bumping from the back of my car by my driveshaft transmission (m6) area ..but i think it might be a bent axle. but my the bumping goes away after about 80 mph .. even around coasting out of gear i get the pulsating... could be tranny mount??? help!
Old 10-09-2011, 08:31 AM
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The transmission mounts are know to break as a result of the torque arm from GM locating the front of the torque arm to the transmission. I don't see it causing the vibration you are describing though, I'd look at the oem torque arm if you still have it. The factory torque arm is known to start bending approx six inches ahead of the rear. Bob
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Old 10-09-2011, 03:44 PM
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try swaping your drive shaft 180 degrees




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