Replacement Rear Audio Control Knob - Designed as a direct replacement for your lost or broken knob (reference number: 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 with chrome ring on knob face to match the stock look and restore the appearance of your vehicle's interior. Easy installation; new knob simply slides into place within seconds, as long as the previous knob left a compatible base. Designed specifically to fit: - 2007 - 2013 1500 - 2007 - 2014 2500 - 2007 - 2011 1500 - 2007 - 2011 2500 HD - 2007 - 2011 3500 HD - 2007 - 2009 Other Models - 2009 - 2013 Other Models - 2007 - 2013 1500 - 2007 - 2014 2500 HD - 2007 - 2014 3500 HD - 2007 - 2014 Other Models - 2007 - 2014 XL - 2007 - 2011 Escalade - 2009 - 2013 Enclave - 2009 - 2013 Acadia (Excludes 07 Classic Body / Sierras) Color: Black + Silver Material: Plastic Reference Number: 22912547 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 the color of the item in the picture to appear slightly different from the real thing. The measurement allows for an error of +/- 1-3cm.