Big Kmart at EL MONTE CENTER morphed into the Sears Essentials seen here in the spring of 2005. This store lasted until early 2012. In May of the same year, it re-opened as a Sears Outlet. That store closed for good in early 2017. 
Photo from Jeff Arellano

Adjacent to the Sears Outlet was Dearden's, a home furnishings store. 
Photo from  http://www.decronproperties.com / Decron Properties

The original mall structures were given a 10 million dollar renovation and expansion in 2004-2005, which included the installation of a Longo Lexus dealership (in the old Sears) and construction of a multilevel parking garage. In the early 2020s, EL MONTE CENTER has been separated from the old mall structure -now auto dealerships- by a tree barrier.

EL MONTE CENTER TENANTS 2022:

Big 5 Sporting Goods (outparcel) / Dearden's home furnishings / Dennys restaurant (outparcel) / Jamba Juice - Wendy's hamburgers (outparcel) / New Wok Chinese - Shabu Shabu & Grill (outparcel) / Planet Fitness (outparcel) / Yoshinoya Japanese Kitchen (outparcel) 

Staples operated in this freestanding building, which is in the front parking area of EL MONTE CENTER. The store was shuttered in June 2014 and re-opened as a Pioneer Fitness gym.

Photo from  http://www.decronproperties.com / Decron Properties