Vibration at speeds above 70 MPH, seat shaking, 2003 Bonneville - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-23-2013, 04:38 PM   #11
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Al,

When was the last time you replaced the transmission mount?
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Old 05-23-2013, 04:41 PM   #12
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I was under there moving it around with a bar,didnt look bad..i will look again on a lift this time.now after i put in new axle right turns make the wheel wiggle and going over speed bump made a scarey bang..got to be that bolt i cannot tighten up.
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Old 05-23-2013, 05:02 PM   #13
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I thought my mount was ok for years. It looked solid. I never did the "in gear, hold brake, rev engine and look for lift test". Only after seeing everyone replace their mount, did I know I had to replace my mount. No way, at 188k was my mount ok, yet everyone else failed at 100k.

Only after I pulled the mount, did I see the internal damage. It was really bad. A visual check showed a mount in working condition. Visuals may not be enough to diagnose a mount.
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Old 05-23-2013, 05:11 PM   #14
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my car has 90 on it now,got it with 42 2 yrs ago..i replaced the front one to the rad support..
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Old 05-27-2013, 10:38 AM   #15
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seems better now..got another weird one..when i turn wheel to right and make a turn the wheels shake..i just put in a right axle..it didnt do it before...also put 2 outer tierods in too..weird..
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Old 06-13-2013, 09:07 AM   #16
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shaking from right turning,fixed..put the old axle back in and problem solved..shaking under seat gone also..not sure what fixed that.
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Related Topics
Thread Thread Starter Forum Replies Last Post
01 Bonny shaking around 52 mph in 2nd, 3rd, or 4th gear Andy King 2000-2005 8 01-07-2008 10:53 PM
Harsh shifting between speeds of 10 to 20 mph whitecrystal1 2000-2005 7 11-17-2007 05:57 PM
Shaking around 40-50 mph D4684E 1992-1999 9 01-24-2006 06:48 PM
click at low speed/vibration above 55mph thetinch 1992-1999 9 08-04-2005 06:01 PM
Shaking at High Speeds jhp027 1992-1999 12 05-03-2004 03:10 PM


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