Designed as a direct replacement for your lost or broken knob (reference numbers: 22912547 or for 22912547) Please note this is for the rear audio controls on the back of the center console; this is not the larger knob for the radio in the dash Black textured grip, chrome ring on knob face to match the stock look and restore the look of your vehicles interior Easy installation; new knob just slides into place within seconds just make sure there is left from the previous knob Designed specifically to fit: 2007 - 2013 for 1500 / 2007 - 2014 for 2500 / 2007 - 2011 for 1500 / 2007 - 2011 for 2500 HD / 2007 - 2011 for 3500 HD / 2007 - 2009 for / 2009 - 2013 for / 2007 - 2013 for 1500 / 2007 - 2014 for 2500 HD / 2007 - 2014 for 3500 HD / 2007 - 2014 for / 2007 - 2014 for XL / 2007 - 2011 for Escalade / 2009 - 2013 for Enclave / 2009 - 2013 for Acadia. (Excludes 07 Classic Body /Sierras) Color: black + silver material: plastic Reference Number: 22912547. Replacement Rear Audio Control Knob. Size:. 15 x 25mm Package Contents: 4 x knob Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.