description GMC C/K Overview
The GMC C/K was a full-size pickup truck manufactured by General Motors from 1967 to 1999. Known for its durable body-on-frame construction and long production run, it provided reliable work capability. This series catered primarily to commercial users, contractors, and individuals needing a robust vehicle for hauling and towing applications.
help GMC C/K FAQ
What does C/K mean on a GMC or Chevy truck?
In GM truck naming, C generally referred to two-wheel drive and K to four-wheel drive. The C/K naming was used across Chevrolet and GMC full-size trucks for decades before Silverado and Sierra branding took over.
Which GMC C/K years do collectors usually mean by Action Line?
Action Line refers to the 1967 to 1972 generation of GM C/K pickups. This era introduced styling and comfort upgrades that made the trucks popular with both work users and modern restorers.
When did the C/K line give way to Silverado and Sierra?
The GMT800 Chevrolet Silverado and GMC Sierra arrived for the 1999 model year as the main successors to the older C/K pickups. Some Classic versions and heavy-duty C/K related models continued briefly into the early 2000s.
Why are 1988 to 1998 GMC C/K trucks called OBS?
OBS usually means Old Body Style and is commonly used for the 1988 to 1998 GMT400 generation. GMC sold those trucks under Sierra trim names, but enthusiasts still connect them to the broader C/K platform history.
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