What causes driver's side rear wheel to be able to shake
Check the control arm and suspension components for wear, breakage/rust.
Also check the Rear Lower Suspension Control Arms, both the stationary front one and the adjustable rear one. Check rubber bushings to verify they are tight and not deteriorated. One other thing, make sure the two(2) bolts attaching the Strut Mount and Coil Spring to the hub are tight. Check for damaged strut or coil spring..
Before driving any further, make sure the lug nuts are properly tightened.
Looking for a Used Grand Prix in your area?
CarGurus has 1,889 nationwide Grand Prix listings starting at $3,000.
Search Pontiac Grand Prix Questions
Pontiac Grand Prix Experts