Repairing a rusted, cracked or perforated left frame rail on certain Chevrolet and GMC trucks can be a challenging job often requiring specialized skills and equipment, or settling for and adapting salvaged frame components. This Dorman OE FIX frame rail repair kit allows for a more cost-effective and labor-saving replacement of just the failed section with a heavy-gauge steel replacement rail that is designed to be welded into place after proper preparation. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Cheyenne: 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [Chevrolet Silverado 1500: 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [GMC Sierra 1500: 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [GMC Sierra: 2007, 2008, 2009, 2010, 2011, 2012, 2013].