The Avenida Pedro Montt route was discontinued in 1991,  leaving only the Avenida Colón route in service.
 ETCE tried reinstating the Pedro Montt service twice since then, in October 2002 and January 2007, but withdrew it again just a few months later in both instances, after finding that competing service run by other bus companies along the same street made that corridor a money-loser for ETCE.

A new company named Trolebuses de Chile, S.A. (TCSA) was established in 2000, with 40% ownership by ETCE president Pedro Massai.
 ETCE remained the system's overall owner and operator, but some of its assets, including the overhead trolley wires, were transferred to the new company.
 During a three-week suspension of service in August 2002, caused by a drivers' strike, some 20,000 residents signed a petition urging the two sides to reach agreement so that trolleybus service could be restored.
 The city's largest-circulation newspaper, El Mercurio, also published an editorial in support of restoring and maintaining the trolleybus service.

Trolebuses de Chile, S.A. became the operator of the trolleybus system in early 2007.
The Avenida Pedro Montt route was discontinued in 1991,  leaving only the Avenida Colón route in service.  ETCE tried reinstating the Pedro Montt service twice since then, in October 2002 and January 2007, but withdrew it again just a few months later in both instances, after finding that competing service run by other bus companies along the same street made that corridor a money-loser for ETCE.
A new company named Trolebuses de Chile, S.A. (TCSA) was established in 2000, with 40% ownership by ETCE president Pedro Massai.  ETCE remained the system's overall owner and operator, but some of its assets, including the overhead trolley wires, were transferred to the new company.  During a three-week suspension of service in August 2002, caused by a drivers' strike, some 20,000 residents signed a petition urging the two sides to reach agreement so that trolleybus service could be restored.  The city's largest-circulation newspaper, El Mercurio, also published an editorial in support of restoring and maintaining the trolleybus service.
Trolebuses de Chile, S.A. became the operator of the trolleybus system in early 2007.
Trolleybuses in Valparaíso