GM Service Manual Online
For 1990-2009 cars only

Trim height refers to the distance from the bottom of the vehicle's body to the ground (the body trim's ground clearance). Refer to Trim Height Specifications in this section. The following factors can influence what a vehicle's trim height will be at any given time:

    • Tire inflation
    • Additional weight in the vehicle
    • The condition of the struts and the springs after the vehicle accumulates some mileage
    • Non-original tire brand size

Before measuring trim height, perform the following steps:

    • Verify that all of the tires are properly inflated.
    • Remove all extra weight from the vehicle.
    • Bounce the front and rear of the vehicle up and down a few times in order to stabilize the suspension.
    • Verify that the fuel tank is at least 1/2 full.
    • Securely fasten the spare tire and the jack within the rear luggage compartment.
    • Measure the vehicle body-to-ground clearance several times in between bouncing the vehicle's suspension. The true trim height should be an average of several measurements.
    • Close the hood and all of the doors.