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South Gate Assembly was a General Motors automobile plant located in the Los Angeles suburb of South Gate, California. It opened in 1936[1] to build B-O-P (Buick-Olds-Pontiac) cars for sale on the west coast.[2] Managed by the Pontiac division, it was the first GM facility west of the Mississippi River.[3] It was the first GM plant to build multiple car lines[1], resulting from a Depression-spawned move to cut production costs by sharing components and manufacturing.[2] South Gate was the second of several B-O-P "branch" assembly plants (the first being the Buick-operated Linden plant), part of GM's strategy to have production facilities in as many places as possible. These "branch" plants would build cars for distribution to a specific region.[2]

It added production of the Pontiac Tempest, Oldsmobile F-85, and Buick Special alongside the fullsize cars for 1961. When the compacts became intermediates for 1964 their production ceased at South Gate, and Chevrolet fullsize production was added.

The plant was converted from full-size car production to the subcompact H-body cars for 1975. This arrangement was short-lived, and GM returned the factory to building full-size Chevrolet, Olds, and Buick B-body vehicles for 1977. The Olds and Buick were dropped and the Cadillac DeVille added for 1979. However, due to decreasing sales of the Chevrolet B-body cars, it was idled in March 1980.[4] It was then retooled once again for subcompacts, building the 1982 Chevrolet Cavalier and Cadillac Cimarron. Slow sales resulted in the closure of the plant, with production ending on March 23, 1982.[5]

The plant site was later environmentally remediated and used as the location for new schools, including South East High School (opened 2005), which were built by the Los Angeles Unified School District to relieve severe congestion in the existing schools of South Gate.[6][7]

See also

List of GM factories


  1. ^ a b Nicolaides, Becky M. (2002). My Blue Heaven. University of Chicago Press. ISBN 9780226583013.  
  2. ^ a b c Rubenstein, James M (1992). The Changing US Auto Industry. London: Routledge. ISBN 9780203034521.  
  3. ^ Cipriano, Ralph (December 20, 1985). "South Gate OKs Sale of Ex-GM Plant". Los Angeles Times. Retrieved 2009-09-07.  
  4. ^ Stark, Harry A, ed (1981). Ward's Automotive Yearbook 1981. Ward's Communications, Inc.  
  5. ^ Stark, Harry A, ed (1982). Ward's Automotive Yearbook 1982. Ward's Communications, Inc.  
  6. ^ Southeast Area New HS No. 2/MS No. 3 (19370369) at California Department of Toxic Substances Control website. Retrieved 2009-09-22.
  7. ^ Enriquez, Susana (March 2, 2005). "New Schools a Mixed Blessing for South Gate". Los Angeles Times. Retrieved 2009-09-22.  


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