On 29 January 2016, operation was transferred from Sistecozome to another state agency, Sistema de Tren Eléctrico Urbano (SITEUR), which also operates the Guadalajara light rail system.

[3][4] A particularly notable feature of the system was its use, from the system's opening in late 1976 until circa 1 March 1988, of a trolleybus-only subway, with multiple stations, under Avenida Federalismo in the central part of the city.

[5] A new fleet of 25 DINA/Škoda trolleybuses was purchased in 2015, and they began to enter service on 2 February 2016, when the system reopened – now under its new operator – after a one-year suspension[4] that had begun on 31 January 2015.

[4][7][8] In January 2016, it was reported that officials planned also to transfer Sistecozome route 500, which has been operated by diesel buses since January 2015, to SITEUR and reinstate trolleybus operation to it, as Sitren Line 4,[3][4] but by 2019 this had never occurred.

[1] Media related to Guadalajara trolleybus system at Wikimedia Commons