For 1990-2009 cars

Information in this section pertains to unitized body construction which incorporates integral front and rear side rails.

The Saturn body utilizes space frame design galvanized steel and non-galvanized steel, and high strength, low alloy steel (HSLA) in a space frame design.

This type of body construction requires that uniframe components be aligned properly to assure correct suspension location and dimensioning of underbody and upperbody components. Since each individual unibody component contributes directly to the structural integrity of the body, it is essential that proper welding, sealing and rustproofing techniques be observed when performing service and body operation.

Front fenders, doors, rear quarters and roof along with front and rear bumper fascias are bolted onto the uniframe for improved repairability.

### Alignment Checking

There are two types of dimension checking systems described in this section.

### Three Dimensional Method

This is the method to locate collision repair parts. It ensures proper location and post repair performance of the vehicle. It is also useful for diagnosis of damage.

### Two Dimensional Method

This can be measured with the use of a tram bar. The measuring is between two points on a horizontal plane, called point-to-point. The measurements are for estimating purposes only, not for repair work.