GM Service Manual Online
For 1990-2009 cars only

Repair Procedure

Important: Always perform the recommended sectioning method in the area recommended for that method.

The left and right frame rails are available as complete rails for service. This repair procedure is recommended only in the event the extent of the damage to the rail exceeds the limits of partial rail replacement. The complete side rail is available on a special order basis.

Full rail replacement is accomplished by combining all of the sectioning location procedures as necessary to remove and install a complete underbody side rail. To allow flexibility, a full rail may be sectioned in any of the recommended sectioning locations as determined by the extent of damage to the vehicle.

When determining frame rail repair location and method, consider the following:

    • Always straighten and locate rails prior to attempting any SMC repairs
    • Always inspect SMC and adhesive bonds for cracks and breaks
    • Always follow recommended repair procedures for any panels involved in servicing the frame rail
    • Always follow material and equipment manufacturer's recommendations for materials and equipment used in any repair procedure
    • Always follow repair procedures and recommendations to ensure that structural integrity and safety are restored to the vehicle