Before the GMC Sierra was its own model, it designated trim levels. Here's the history of Sierra Grande, High Sierra, and ...
Just before the emissions hammer came down in the early 1970s, Oldsmobile was hard at work creating a monster of an en ...
The Vortec 4200 inline-6 outperformed its size, and even though it was used in SUVs from GM and Chevrolet, its existence has ...
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