my 05 has done it since i have owned it, i have heard its was a bunch of thing like grade of gas,clean the TB, maf, map, ect. and i have done all that it still does it, but i also head its a ecu problem and gm release a re flash for the ecu. i havent check in to it, but i was told by a gm tech. it was a defect on some early 05s like i said i havent really looked into it.
Last edited by Bad05ss; 01-11-2010 at 08:46 AM.