A500
The A500, later renamed 40RH and 42RH (hydraulic controlled governor pressure) and 40RE, 42RE, 44RE (electronic controlled governor pressure, 1996-up) was an A904 derivative used in trucks and vans. Introduced in the 1989 model year on a limited basis, it was the first light-duty Chrysler four-speed automatic and was placed behind the 3.9 L and 5.2 L engines for light-duty purposes. An extension housing mounted overdrive unit was bolted to the rear of the case to provide a total of four forward speeds. This transmission was replaced by the 42RLE in 2004.