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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 254 (FRAME AND UNDERBODY)REPAIR INSTRUCTIONSFRAME REPAIRFRAME STRAIGHTENING
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Frame Straightening

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Frame Straightening
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Frame straightening can be complicated and can require special equipment. Only trained personnel can straighten frames.

Analyze the condition of the frame before attempting to straighten the frame. Analyze the cause of the failure. This will determine the correct sequence of steps in the repair. Use corrective procedures in order to reverse the flow of the damaging forces. Apply pressure from different directions at the same time in order to reverse the flow of forces.

Avoid the following uses of heat:

  • Too much
  • Too little
  • The improper application

Use a large size multi-hole heating tip and a neutral flame in order to heat the frame. Heat the area of the frame you want to stretch. In a neutral flame, the oxygen adjust opens just enough in order to remove the feathers or the stringers from the blue center at the tip of the torch. Heat the area after you exert sufficient pressure in order to cause a slight checking, or silvery cracks to appear on the surface of the metal. Gradually increase the pressure while heating. Do not heat the frame beyond 606°C (1200°F). A red glow indicates that the material is overheated. Overheating will cause distortion and stretching, as well as a change in the characteristics of the metal.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.