Chevrolet Silverado / GMC Sierra. Service manual — part 1271

Fig. 9: View Of Damaged Frame Section
Courtesy of GENERAL MOTORS CORP.

7. Remove the damaged frame section.

Installation Procedure

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Collision Repair - - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 10: Grinding Existing Frame Rail Seam To Taper Seam
Courtesy of GENERAL MOTORS CORP.

1. Grind the existing frame rail seam to taper seam at a 45 degree angle.

2. Prepare all of the attaching surfaces as necessary.

3. Apply the weld-thru primer to all of the welded surfaces.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Collision Repair - - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 11: Positioning New Frame Section To Existing Frame
Courtesy of GENERAL MOTORS CORP.

4. Position the service frame section to the existing frame and clamp in place.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Collision Repair - - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 12: Welding The Frame Sections
Courtesy of GENERAL MOTORS CORP.

5. Continuous-weld the upper and lower horizontal joints threw each corner.

6. Continuous-weld the inner and outer vertical joints from corner to corner.

IMPORTANT: Verify the frame measurements 3-dimensionally to ensure proper position

of the service frame.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Collision Repair - - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado