C'member. Supporting sheetmetal structure attached to the underside of the floor pan. Brace. Center. Crossmember reinforcement. Floor Pan Crossmember. Panel. Reinforce bar. Seat. Side rail sill. SILL Assembly - U/B #3 CR. Floor Pan Crossmember
Fits Sierra 1500, Sierra 1500 Limited, Sierra 2500 HD, Sierra 3500 HD, SilveradoDOUBLE CAB.
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Installed price includes part and dealer installation cost, local taxes not included.