DIY repair · Chevrolet/GMC Suburban (1973–1991 square body)

Rebush the leaf springs and cure the sag

DIFFICULTY 3 / 5TIME ≈ A dayCOST Bushing kit; springs if they're flat

Symptoms

Clunks, wandering, and a 'Burb that sits low at the rear or leans to one side.

The fix, step by step

  1. Replace the spring-eye and shackle bushings with the truck supported on the frame, one corner at a time.
  2. Offroad Design's leaf-spring bushing chart lists the right bushing for each position.
  3. If the springs have lost their arch, replace them.
  4. ORD describes the Suburban as 'typically saggy' and built its own '88 with 3 inches at the front and 4 at the rear so it would sit level.
  5. On a lean, ORD suggests swapping the springs side to side before assuming one is bad.

Tools & part numbers

  • Floor jack and stands
  • press or bushing tool
  • penetrating oil
  • torque wrench

Where to buy the parts

Universal 1969–1991 full vehicle bushing kit with HD front shacklesOffroad Design ↗Amazon ↗
Offroad Design standard spring lift kit, 1973–1991Offroad Design ↗Amazon ↗

Hunting a used or discontinued part? Search eBay Motors for Chevrolet/GMC Suburban (1973–1991 square body) parts →

Before you start

Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.

The Boxy Dispatch · monthly

One new guide, one featured rig, one recall worth knowing. Monthly, no spam.

Subscribe and get a free printable inspection checklist for any truck we cover.