There is no service bulletin for the wobble you speak of on the model you describe. If it is Independent Rear Suspension, (IRS), then Forward and rearward control arm bushes, (both upper and/or lower), would be inspected, along with rear shocks, (Rear Differential mounts and CV shafts would also be inspected). If it is a 'Live-Axle' with Leaf Springs, (no IRS), then leaf spring Eye Bushes and Spring shackle bushes would be inspected, along with shocks. If it was a 'Live Axle' with coil springs, (no IRS), then Lower Control Arm bushes and Pan-hard, or Watt's linkage bushes would be inspected, along with shocks. I have listed the components that would solve this problem in 99% of the suspension systems mentioned.
Wednesday, June 22nd, 2011 AT 1:34 PM