GMC Repair: door panel removal 03 sierra, retainers, retainer

Question
Trying to replace my mirrors. Need to remove door panel to get to harness. Can you help?

Answer
hi
here is procedure, from GM
Remove the door handle bezel. (Insert a flat-bladed tool between the door handle bezel and the trim panel in order to release the handle bezel tab retainers)
Remove the door trim panel upper extension. (Release the upper extension by pulling outward on the front edge in order to release the upper retainer clips.
Remove the upper extension from the trim panel by lifting up and out.)
Using a suitable flat bladed tool, gently pry the manual lock lever from the door trim panel.
Remove the trim panel screws
•  Remove the screw  (2) from within the opening where the manual door lock lever resides.

•  Remove the screw  (3) from the opening in front of the armrest.

•  Remove the screw located beneath the map pocket, if equipped.

Carefully slide the trim panel UP in order to release the retainers from the door.
Disconnect the electrical connectors.
I hope this helps.
Dont forget to PULL or PUSH UP ON DOOR PANEL, DO NOT PRY IT OR PULL ON IT.
Good Luck
Pawl