In 1989 Sergio Vega replaces Alan Peters (ex-Agnostic Front bassist) in the New York hardcore band Absolution.

[3] The EP was well received by music critics,[4] the success of The Ray Martin Sessions allowed Vega to tour the US and UK.

He toured with former Orange 9mm/Helmet guitarist Chris Traynor, bassplayer/fashion model Sibyl Buck and Charlie Walker (Split Lip) on drums.

Vega played in Chi's place at Bamboozle Left with Deftones, and continued to fill in for him as Cheng's condition remained the same.

When his accident occurred, Deftones had just finished writing and recording songs for what was to be their sixth studio-album, Eros, although they decided to shelve the album indefinitely.

[5] In June 2012, Sergio and Quicksand would secretly reunite to play a surprise set at Revelation Records' 25th anniversary show.

For his first two albums after joining Deftones, Vega used Fender Jaguar Basses exclusively (tuned CGCF, C#G#C#F#, Drop D, or standard E, depending on the song).

His effects include Native Instruments Guitar Rig 3 software and a Tech 21 SansAmp Bass Driver DI.

His rig was completely changed in 2013, with the Fractal Axe-FX II being the main unit for his sounds, along with a Matrix GT1000FX power amp and 2 Orange 8x10 speaker cabinets for amplification.