GM Service Manual Online
For 1990-2009 cars only

Condition

Action

The use of equipment like snow plows for which the frame was not designed.

Straighten and reinforce the frame. Refer to Frame Straightening Description .

There is a collision involving the vehicle.

Straighten and reinforce the frame. Refer to Frame Straightening Description .

A fire involving the vehicle.

 

There are abrupt changes in the section modulus.

 

There is improper body or accessory mounting, including the following conditions:

    • Holes drilled in the flange of the frame rail
    • Too many holes in the web section of the frame rail
    • Welds on the flange, particularly across the flange or along the edge
    • Cutting holes in the rail with a torch
    • Cutting notches anywhere on the rails
    • Holes in the web that are too close together
    • 4 or more holes in the same vertical line of the rail web

Straighten and reinforce the frame. Refer to Frame Straightening Description .