Trim Height Measurements

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Trim height is a predetermined measurement relating to vehicle ride height. Incorrect trim heights can cause bottoming out over bumps, damage to the suspension components and symptoms similar to wheel alignment problems. Check the trim heights when diagnosing suspension concerns and before checking the wheel alignment. Perform the following before measuring the trim heights:

Make sure the vehicle is on a level surface, such as an alignment rack.
Remove alignment rack floating plate pins.
Set the tire pressures to specifications.
Check the fuel level. Add additional weight if necessary to simulate a full tank.
To ensure proper weight distribution make sure the rear storage compartment is empty.
Close the doors and hood.