Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISMAINTENANCEALIGNMENTSERVICE AND REPAIRTRIM HEIGHT INSPECTION
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Trim Height Inspection
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Trim Height Inspection
Z HEIGHT MEASUREMENT
In order to determine the Z height measurement, use the following procedure:
1. Lift the front bumper of the vehicle up about 38 mm (1.5 inch).
2. Gently remove your hands. Allow the vehicle to settle.
3. Repeat the previous two steps two more times, for a total of three times.
4. Measure from the lower control arm pivot bolt center line down to the lower corner of the steering knuckle in order to obtain the Z height dimension.
5. Push the front bumper of the vehicle down about 38 mm (1.5 inch).
6. Gently remove your hands. Allow the vehicle to settle.
7. Repeat the previous two steps two more times, for a total of three times.
8. Measure from the lower control arm pivot bolt center line down to the lower corner of the steering knuckle in order to obtain the Z height dimension.
9. Find the average of the high measurements and the low measurements in order to determine the Z height dimension.
D HEIGHT MEASUREMENT
In order to determine the D height measurement, use the following procedure:
1. Lift the rear bumper of the vehicle up about 38 mm (1.5 inch).
2. Gently remove your hands. Allow the vehicle to settle.
3. Repeat the previous two steps two more times, for a total of three times.
4. Measure from the bottom of the rear axle stop bracket (1) to the top of the rear axle (2) to obtain the D height dimension.
5. Push the rear bumper of the vehicle down about 38 mm (1.5 inch).
6. Gently remove your hands.
7. Allow the vehicle to settle.
8. Repeat the previous two steps two more times, for a total of three times.
9. Measure from the bottom of the rear axle stop bracket (1) to the top of the rear axle (2) to obtain the D height dimension.
10. Find the average of the high measurements and the low measurements in order to determine the D height dimension.
In order to determine the Z height measurement, use the following procedure:
1. Lift the front bumper of the vehicle up about 38 mm (1.5 inch).
2. Gently remove your hands. Allow the vehicle to settle.
3. Repeat the previous two steps two more times, for a total of three times.
4. Measure from the lower control arm pivot bolt center line down to the lower corner of the steering knuckle in order to obtain the Z height dimension.
5. Push the front bumper of the vehicle down about 38 mm (1.5 inch).
6. Gently remove your hands. Allow the vehicle to settle.
7. Repeat the previous two steps two more times, for a total of three times.
8. Measure from the lower control arm pivot bolt center line down to the lower corner of the steering knuckle in order to obtain the Z height dimension.
9. Find the average of the high measurements and the low measurements in order to determine the Z height dimension.
D HEIGHT MEASUREMENT
In order to determine the D height measurement, use the following procedure:
1. Lift the rear bumper of the vehicle up about 38 mm (1.5 inch).
2. Gently remove your hands. Allow the vehicle to settle.
3. Repeat the previous two steps two more times, for a total of three times.
4. Measure from the bottom of the rear axle stop bracket (1) to the top of the rear axle (2) to obtain the D height dimension.
5. Push the rear bumper of the vehicle down about 38 mm (1.5 inch).
6. Gently remove your hands.
7. Allow the vehicle to settle.
8. Repeat the previous two steps two more times, for a total of three times.
9. Measure from the bottom of the rear axle stop bracket (1) to the top of the rear axle (2) to obtain the D height dimension.
10. Find the average of the high measurements and the low measurements in order to determine the D height dimension.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.