Designed as a direct replacement for your lost or broken knob (reference number: 22912547) This is for the rear audio controls on the back of the center console; not for the larger radio knob in the dash Black textured grip with chrome ring on knob face to match original appearance and restore interior look Easy installation; new knob slides into place within secondsensure the mounting stem from the previous knob remains Fits: 20072013 1500, 20072014 2500, 20072011 1500, 20072011 2500 HD, 20072011 3500 HD, 20072009, 20092013, 20072013 1500, 20072014 2500 HD, 20072014 3500 HD, 20072014, 20072014 XL, 20072011 Escalade, 20092013 Enclave, 20092013 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 includes: 4 x knob Content limited to items listed; other products not included Note: Lighting and display differences may cause slight color variation between image and actual item. Measurement may vary by +/- 1-3cm