Ten of the cars underwent their first-ever major refurbishment at the State Transport Authority's workshops, based at the time in Regency Park. In 2001 and 2002, some Type H cars were modernised, asbestos was removed and electronic inverter controls replaced the original control gear. Five cars were given a complete rebuild. In 2005 all remaining cars were modified so they could operate past the upgraded passenger platforms built in readiness for new 100 Series Flexity Classic trams, which would be narrower. When introduced in 1929, the cars received a varnished tuscan-red and deep cream livery, with varnished wood interiors and black undergear, as for other Adelaide trams. Between 1952 and 1956 the livery of all Type H cars was changed to silver and carnation red and an Ashbury green interior. In 1959 and 1960, two cars were painted in a short-lived experimental grey and carnation red livery, and in 1971 two others received the same livery but with a "railway" red roof to overcome the problem of silver roofs soon appearing dirty; the idea was not adopted. All silver trams were returned to their original external and internal livery starting in 1971, when 18 cars were extensively refurbished. Some cars received liveries different from the two mentioned. In 1979 car 377 was repainted with a black-and-gold livery to celebrate the 50th anniversary of tramway operation on the Glenelg line, which it retained for a few years. Car 380 was also briefly repainted in 1979 into a special livery by students in the Glenelg area as part of a South Australian schools festival. Car 378 gained a grey-roofed, royal blue, gold-lined livery in 1990 when it became a restaurant car. In 2006, when the first of the new trams purchased for Adelaide's tramways revival began operation, a numerical "series" classification replaced the old alphabetical system. From then until they ceased running in 2015, Type H trams were designated as the 300 Series, which conveniently accorded with their existing numbers. The first withdrawal from service of Type H cars occurred in the late 1950s; by 1968 the fleet consisted of 26 cars. In September 2005, tenders were called for the sale and removal of 16 cars: ten operational; restaurant car 378; and five non-operational. Organisations such as museums with heritage experience could seek a tram as a gift or at minimum value. Their subsequent uses were as varied as a restaurant, an attraction at a bed-and-breakfast venue, a tourism display at Glenelg, and a media studies classroom in a Riverland high school.