The following facts about the GMC Sierra, manufactured by GMC, were retrieved from many sources. We only strive to point out major facts that could be most useful to our customers here.
The GMC Sierra 1500 was first introduced in 1998 as a 1999 model.
The GMC Sierra is currently available in three different models: 1500, 2500HD, and 3500HD.
The GMC Sierra HD models were introduced in 2001: 1500HD, 2500HD, and 3500 models.
The GMC Sierra was redesigned in 2007 with a completely redesigned exterior, interior, frame, and suspension.
The 2006 GMC Sierra was carried over to 2007, but they were badged the 2007 GMC Sierra Classic models.
GMC Sierra History