Caster Adjustment
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1984 Pontiac Grand Prix, 1984 Pontiac Fiero, 1984 Pontiac Bonneville, 1984 Oldsmobile Ninety-Eight, and 1984 Oldsmobile Cutlass. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
On diesel engine vehicles, remove resonator bracket before adjusting caster and camber. On all models, jounce vehicle several times to settle suspension. Release on down stroke. Check for proper tire pressure, worn steering or suspension components.
- Loosen nuts attaching upper control arm pivot shaft to frame. To increase caster (positive), remove shims from front bolt and add them to rear bolt. Difference between front and rear shim pack should not exceed .40" (10.2 mm).
- To decrease caster (negative), add shims to front and remove from rear bolt. Tighten control arm shaft nuts, starting with thin shim pack first. Recheck caster. See Figure .