GM Service Manual Online
For 1990-2009 cars only

This vehicle utilizes a rear-steer, parallelogram type steering linkage to connect the wheels to the steering gear through the pitman arm.

The outer tie rods attach to the steering knuckle and the hub. The inner tie rods attach to the relay rod. The left end of the relay rod is supported by the steering gear and the right end by the idler arm which pivots on an idler arm support attached to the frame.

The pitman arm and the idler arm are always parallel to each other. The pitman arm and idler arm move through symmetrical arcs.