There are also full-featured, power-adjustable front buckets with integrated seatbelts, fold-down inside armrests, electrically heated bottom cushions and backrests, and articulating head restraints.
The three-passenger rear seat folds upward to clear the way for interior cargo. Kornas calls the C-Series center console "a model of functional convenience, highlighted by an exclusive driver information center and 6-CD changer mounted in an extension assembly that blends the center console into the instrument panel." It also provides dual cupholders, an ashtray, and two more power plugs.
The C-Series Delco dual playback AM/FM stereo enhanced 6-speaker soundsystem with speed sensitive volume and TheftLock security system is augmented by a six-disc CD changer mounted in an extension of the center console. Pressing just one button permits loading up to six CDs in rapid sequence.
The console's rear area has dual headphone jacks with audio controls, so the rear passengers can adjust audio volume and make their own program selection choices while front seat occupants enjoy different audio material.
Kornas characterizes the Sierra C-Series as "being capable yet sophisticated in itson-road mannerisms. No one has ventured quite this far in the realm of performance, control and all-around refinement in the truck arena."