response: They were brought out in 1998.
original_response: I think you are probably right, but I don't have the statistics on hand. I do know that the Silverado is the mechanically identical cousin of the GMC Sierra, though.
history: The Chevrolet Silverado is a very popular car in the United States. Did you know it and the GMC Sierra mirror each other mechanically? They are also both made by General Motors. Do you know when they were first introduced?
knowledge: The Chevrolet Silverado, and its mechanically identical cousin, the GMC Sierra, are a series of full-size and heavy-duty pickup trucks manufactured by General Motors and introduced in 1998 as the successor to the long-running Chevrolet C/K line.