AdvertisementGM Stays At The Top As U.S. Car Sales Surge In JulyAugust 01, 2014Bill ChappellfacebookEmailSales of GM's cars slid by 3.8 percent from July 1013, but its light trucks and SUVs, like this Buick Enclave, more than made up for it, spiking 17.5 percent. (AP)