Although GMC and Chevrolet trucks are mostly identical, their differences have varied throughout the years. While Chevrolet is sold solely at Chevrolet dealers, GMC are made available to franchisees of Buick, Pontiac, Cadillac. GMC have slight trims differences from Chevrolets (i.e. grille, emblems, and other minor aesthetics). Between 1962 and 1972, most GMC vehicles were equipped with quad-headlights, while their Chevrolet counterparts were equipped with dual-headlights. Starting in 1973, with GM's introduction of the new rounded line series trucks, GMC and Chevrolet trucks became even more similar, ending production of GMC's quad-headlight models, and setting the standard for the Chevrolet/GMC line of trucks for over thirty years. During this period, the sister models of the two companies (Silverado/Sierra, Blazer/Jimmy, Tahoe/Yukon, etc) shared everything except trims and price. GM has recently begun a divergence in design between the two lines with the 2007 model Silverados and Sierras, which have some differences in sheetmetal and style. More people think the looks of a Chevrolet is alotbetter than what a GMC does. GMC's are focused more on luxury than work.

Today, for the most part, GMC offers the same trucks available under the Chevrolet brand. A Sprint, for example, was a rebadged Chevrolet El Camino, the Sierra is a rebadged Chevrolet Silverado, etc. Alongside sister brand Cadillac, all three share the Suburban/Tahoe SUV platform due to Cadillac's upscale Escalade and Escalade ESV brands, with GMC's Yukon Denali being more close to the Escalades.

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On April 16, 2009, reports began spreading that GM was exploring the possibility of eliminating the GMC brand as a way to restructure its bankruptcy plan. The speculation was based on rumored reports from automotive websites and business publications after a story involving a study that might point to indications that the brand could be eliminated altogether along with sister brand Pontiac found its way onto the press despite a GM statement that it was just a rumor. There are some who believe that GMC could survive the ax, since GM has stated in earlier stories that it wants to keep the GMC brand in the GM automotive family. On April 24, 2009, people familiar with the decision at General Motors said that the company would be dropping the Pontiac brand while preserving the GMC truck line, as well as the Chevrolet, Cadillac and Buick brands.

On June 1, 2009 General Motors filed for Chapter 11 bankruptcy proceedings from which it emerged on July 10, 2009 in a reorganization in which a new entity acquired the most valuable assets. GM is now majority owned by the United States Treasury and Canadian governments, with the US government investing a total of  $57.6 billion under the Troubled Asset Relief Program GM plans to focus its business on its four core US brands, Chevrolet, Cadillac,Buick, and GMC. In Europe, following a period of negotiation to sell a majority stake in its Opel and Vauxhall brands, GM decided to retain full ownership of these operations. In 2009, General Motors employs approximately 244,500 people around the world. General Motors global headquarters is the Renaissance Center located in Detroit, Michigan, United States. In 2008, GM sold 8.35 million cars and trucks globally. Get more details about GMC's SUV, Yukon, by reading a GMC Yukon review by Motor Trend