Availability: 9 in stock
Factory part number 19346353: an element supplied by GM.
It is catalogued under Accessories & Mounts > Inserts & Elements.
Where a diagram shows several similar items on one assembly, the difference between them is normally length, shoulder or handedness. Corrosion at a mounting face is worth cleaning back before fitting anything new, because a part that sits on scale will work loose.
Leaves our US warehouse in one to two business days, and shipping is free over $59. The part number is the thing to verify. Where the old part carries no legible number, a VIN and a photograph are enough for us to identify it.