DETROIT – General Motors Corp. announced its latest 0% financing marketing offer it's coined "Summerdrive." Starting July 2, GM is offering qualified buyers cash or 0% financing for 36/48/60 month terms on the purchase of new 2002 model Buick, Cadillac, Chevrolet, Oldsmobile, Pontiac-GMC cars and trucks through September 3. Saturn, Saab, HUMMER and all 2003 models are excluded from this program. GM said it may run the program for up to five years. The company is also considering increasing warranties from three years to five years on many models. Ford also announced it will begin offering 0% financing for up to three years on a select number of models.