GM Service Manual Online
For 1990-2009 cars only

The steering linkage consists of the following components:


Object Number: 368402  Size: SH
    • The pitman arm (6)
    • The relay rod (5)
    • The steering arms
    • The tie rod

The turning motion of the steering wheel is transmitted through the steering gear and the pitman arm to the relay rod.

Inspect the following conditions whenever any steering linkage components are repaired or replaced:

    • The steering geometry
    • The front end alignment

Refer to Front Caster Adjustment or Front Camber Adjustment or Front Toe Adjustment in Wheel Alignment.

Relay Rod

The relay rod has a ball joint at each end. The relay rod connects to the forward steering arm on the left side.

The tie rod extends the length of the axle. The tie rod connects the left and the right steering arms. This arrangement provides control of the right wheel.

The overall condition of the steering linkage affects the steering performance. The following conditions may cause poor steering performance:

    • Bent parts
    • Damaged parts
    • Worn parts
    • Poorly lubricated parts

Tie Rod

The tie rod assembly consists the following components:

    • The tie rod tube
    • The two tie rod ends

The tie rod ends thread into the tube. Clamps secure the tied rod end to the tube. The right and left hand threads provide a convenient method of adjusting the toe-in. Replace the tie rod ends when any of the following conditions are noted:

    • An excessive up and down motion is present
    • Excessive end play at the ball end of the stud is present
    • Loss of motion at the ball end of the stud is present

Before any repair is undertaken, note the position of the tie rod end clamps and the direction from which the bolts are installed. Reinstall the parts in the proper position in order to avoid interference with the adjacent parts of the vehicle.