Download Removal Procedure 1. Disable the SIR system. Refer to SIR Disabling and Enabling . 2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. 3. Remove all of the related panels and components. 4. Repair as much as the damage as possible to factory specifications. Caution: Refer to Foam Sound Deadeners Caution in Cautions and Notices. 5. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair. 6. Perform the necessary procedures to gain access to the repair. 7. On the outboard side of the rail, locate the upper reinforcement bracket (1). On the bottom of the rail, locate the lower reinforcement bracket (2). 8. Measure 280 mm (11 in) (a) forward from the edge of the upper reinforcement bracket (1). Make a mark. 9. Measure 100 mm (4 in) (b) forward from the edge of the lower reinforcement bracket (2). Make a mark. 10. Using the two marks, align a sliding square or similar tool (1) square to the surface to the vertical walls of the frame rail. 11. Scribe a line to both sides of the frame rails. 12. Cut the frame rail at the marked location. 13. Remove the damaged frame rail section (1) from the vehicle. Installation Procedure 1. In order to create the rail section service part (1), cut the full rail service part (2). 2. On the outboard side of the full rail service part, locate the upper reinforcement bracket (1). On the bottom of the rail, locate the lower reinforcement bracket (2).