Truck Suspension And Steering Linkage Basics Steering Spindle
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IFS with double A-arms is common on GM two-wheel drive trucks since 1960. The steering spindle/knuckle assembly pivots on upper and lower ball joints. These ball-stud joints wear over time. If loose, the front end may shimmy, much like a traditional "kingpin shimmy" caused by loose kingpin bushings. View Related Article
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