To install, reverse removal procedure. Install front leg of lower control arm onto vehicle, then rear leg. Install lower control arm pivot bolts, washers and NEW nuts, with bolts heads facing forward on Astro, "K" Series Blazer & Pickup, Safari, Sierra, Suburban and Yukon. Pivot bolt heads should be installed facing rear on Bravada, Jimmy, Sonoma, Typhoon and "T" Series Blazer & Pickup.
CAUTION:
When installing upper ball joint stud nut, tighten nut to align cotter pin hole. DO NOT tighten ball joint stud nut more than an additional 1/6 turn to align cotter pin hole. Complete tightening of upper ball joint stud nut with vehicle at proper riding height specification.