GM Service Manual Online
For 1990-2009 cars only

General Body Construction

The following are supported by a frame which is bolted to the body through rubber insulators at four locations:

    • The engine
    • The front suspension lower control arms
    • The steering gear
        Two rubber insulated struts secure the engine to the upper rail of the engine compartment front panel.

Mounting provisions for the front suspension system are shared by the chassis components (suspension lower control arms and frame) and the body components (engine compartment side panels). The underbody must be properly aligned to maintain the correct suspension and the correct wheel alignment.

Individual underbody components contribute directly to the overall strength of the unibody. Use proper welding techniques during service repair operations. The components must be corrosion protected whenever body repair operations damage or destroy the original sealing surfaces. When corrosion protection is need refer to Anti-Corrosion Treatment and Repair in General Body Service.