GM Service Manual Online
For 1990-2009 cars only

Condition

Action

A collision involving the vehicle.

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

A fire involving the vehicle.

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

The use of equipment such as snow plows for which the frame was neither designed nor properly reinforced.

 

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 .