Frame Conditions - Sag. Chevrolet PJJ 2000

For 1990-2009 cars

Condition | Action
--- | ---
Loads greater than the frame is designed to carry causes sag. | Straighten and reinforce the frame. Refer to Straightening Frames.
Uneven load distribution causes sag.
Abrupt changes in the section modulus.

Improper body, or accessory mounting, which may include the following:

• | Holes drilled in the flange of the frame rail.

• | Too many holes in the web section of the rail.

• | Holes in the web section which are too close to each other.

• | Four or more holes in the same vertical line of the rail web.

• | Welds on the flange, particularly across the flange or along its edge.

• | Cutting holes in the rail with a torch.

• | Cutting notches anywhere on the rails.

A collision involving the vehicle causes the following conditions:

• | Sag

• | Buckle

• | Sidesway

• | Diamond

The use of equipment for which the frame has not been designed or reinforced causes the following conditions:

• | Sag

• | Buckle

• | Sidesway