Replacement Rear Audio Control Knob Designed as a direct replacement for your lost or broken knob (reference number: 22912547) This knob is for the rear audio controls on the back of the center console; it is not the larger knob for the radio in the dash Features a black textured grip with a chrome ring on the knob face to match the original look and restore your vehicle's interior appearance Easy installation; the new knob simply slides into place within seconds ensure the previous knobs base remains installed Specifically designed to fit: 2007 - 2013 1500 / 2007 - 2014 2500 / 2007 - 2011 1500 / 2007 - 2011 2500 HD / 2007 - 2011 3500 HD / 2007 - 2009 / 2009 - 2013 / 2007 - 2013 1500 / 2007 - 2014 2500 HD / 2007 - 2014 3500 HD / 2007 - 2014 XL / 2007 - 2011 Escalade / 2009 - 2013 Enclave / 2009 - 2013 Acadia (Excludes 07 Classic Body / Sierras) Color: Black and 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 is included; other products are not included Note: Light reflection and different displays may cause slight color differences between the image and the actual item. Measurement may vary by +/- 1-3cm.