Its very easy to do did mine today pull the door panel off 3 screws 2 on each corner of the bottom of the door and one in the grab handle tray.
Replace drivers door inside door handle.
Interior door handle replacement left driver s side front or rear fits 2006 2011 chevrolet hhr chrome replaces 19299614 25812196 t1a interior door handle replacement for 2006 2011 chevrolet hhr fits front or rear door of left driver s side includes pin and spring chrome finish t1a 19299614.
Pop out the inside door panel to access the handle from inside.
This video is about the factory dealer repair replacement approach with new rivet to fix the very common broken inside door handle for any old body style.