Envoy 2WD V6-4.3L VIN W (1998)
Alignment: Service and Repair
Ride/Trim Height Measurement and Adjustment
Z HEIGHT
Trim height is a predetermined measurement relating to vehicle ride height. Incorrect trim, heights May cause symptoms similar to alignment
problems.
Check the trim, heights when you diagnose steering or vibration complaints.
The Z dimension measurement determines the proper ride height for the front end. The Z dimension is different for RWD vehicles and S4WD or
F4WD vehicles. The S4WD and F4WD vehicles have different points of measurement to determine Z height. Use the torsion bar adjusting arm in
order to adjust Z height. RWD vehicles have no adjustment and could require replacement of suspension components.
Z Measurement
On RWD vehicles, measure Z height from the center line of the bolt of, the front lower control arm down to the lower inboard corner of the ball joint.
Trim all Z heights at 73.0 + 6.0 mm (2.8 + 0.2 in).
Z Measurement
On S4WD and F4WD vehicles, measure Z height from the center line of the pivot bolt (1) down to the lowest inboard edge of the knuckle(2).
Trim all curb Z heights at 122.0 + 6.0 mm (4.8 + 0.2 in). To adjust Z height, turn the bolt that contacts the torsion arm as needed. One revolution of
the bolt into the nut increases the Z height by 6.0 mm, (0.2 in) (1).
Z HEIGHT MEASUREMENT
