The proof of concept was built by the team in 1988, equipped with not only a computer-programmed hydraulic pressure system but also a concealed winch, a cab-mounted spoiler, high-beams, and a two-tone ...
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Why the Sierra Classic 454 became GMC’s heavy hitter
Collectors chase the GMC Sierra Classic 454 because it captures the last gasp of big-block torque in a square-body truck. Buyers now want clear answers on which years carried the 454 badge from the ...
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