2003 Lexus GX 470

Suspension problem
2003 Lexus GX 470 V8 Four Wheel Drive Automatic 126000 miles

I just bought a used 2003 GX 470 Lexus Jeep and am NOT having a smooth drive as it bounces along smooth roads and jumps on rough roads. Can somebody tell me what the problem is and what is the solution please.
Peter Osanebi
October 22, 2010.

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