 TVNZ | GM's No. 1 sales title at risk CNNMoney.com But the fact that GM is planning to shed the Pontiac, Hummer, Saturn and Saab brands will only add to the pressure on its market share. Those four brands account for 2.8 percentage points of GM's current market share. GM vice president Mark LaNeve, ... Q3 Output Plan Tepid, But Still Targeted as Year's Strongest Quarter May Sales: Hummer Outsells Civic ? to Chinese Heavy Duty Truck... Ford market share grows in the US |