I forgot to add, had quite an exciting day with the 2010 GMC Terrain.
The vehicle shuddering continued the next day, and while at an intersection, the engine completely shut off, brakes didn't work; was able to shift to neutral and coast to a stop with emergency blinkers on.
Called National roadside assistance, and they brought a tow truck to bring me a replacement vehicle (2010 Chrysler 300 with 5 miles on odometer) and tow the Terrain back for repair.
Last edited by drzoidberg; Oct 4, 2009 at 2:29 pm