Measuring J-and K Dimensions
- Use your hands in order to lift the front bumper of the vehicle up approximately 38 mm (1.5 in). Gently remove your hands in order to allow the vehicle to settle.
- Use your hands in order to push the front bumper of the vehicle down approximately 38 mm (1.5 in). Remove your hands in order to allow the vehicle to rise.
- Measure the J-dimension for the left and right side of the vehicle 604 mm (24 in) from the centerline of the FRONT wheel (1).
Courtesy of GENERAL MOTORS CORP.
- Replace the front springs to correct the front trim height as necessary.
- Use your hands in order to lift the rear bumper of the vehicle up approximately 38 mm (1.5 in). Gently remove your hands in order to allow the vehicle to settle.
- Use your hands in order to push the front bumper of the vehicle down approximately 38 mm (1.5 in). Remove your hands in order to allow the vehicle to rise.
- Measure the K dimension for the left and right side of the vehicle 560 mm (22 in) from the centerline of the REAR wheel (2). See Fig 1
.
- Replace the rear springs to correct the rear trim height as necessary.