My 03 buick rendvouse has a vibration around 70 mph what all could be the problem

SOURCE: Vibration when idling and between 40-70 mph

check out harmonic balancer .

SOURCE: oscillating vibration around 60-70 mph in 6th gear

sounds like a cv joint to me. That is what usually occurs when one is showing wear. C.V joints usually wear out between 80,000 and 120,000 k.m.

SOURCE: 03 Dodge Ram 2500 Quad Cab 4x4 Death Wobble at around 70 mph???

I have a 2004 with the same problem. It is actually a defect on dodges behave. The steering box flexes on the frame when you hit a bump. Bd diesel puts out a steering box brace and a new track bar with the right geometry to fix it. I had replaced everything under my front end before i saw the article in off road adventures magazine. I contacted dodge and asked why this was not a safety recall. They said they no nothing about it and refused to help me. I called the National Highway Transportation Safety Board and filed a complaint. I suggest you do the same and anyone else who reads this. If you need to contact me email me at [email protected]. maybe we can get enough people to complain before someone dies from this.

SOURCE: 2003 suburban vibration at 65 to 70 mph

could be a worn universal joint on the driveshaft

SOURCE: Tire Vibration

I had the same problem. Vibrations start around 40mph, up through 60 . seems to be ok when I am off the accelerator. The problem was not dirty ETM rather a busted passenger side cv boot and axle. Fixed it and the problem is gone. The part from Volvo its expensive. Over $500. But OEM part can be had for less than $200. I have a 2003 s60 T5.