2007 GXP won't start no power antitheft?

[michaelbm]

just curious if you tried cleaning and tightening the battery cables? loose connections will do something like that.

[Cbierniat24]

Nope I didn't do anyting like that because it was in a dark parking lot. Im going to head up there in a few. What is the correct group size and cold crank? I've read theres been some confusion between group 34 and 85. I went to advanced auto parts and they tried selling this group 35. I don't know much about them any with some insight? http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_RedTop&174-Starting-Battery-Optima-Batteries_16940003-P_2916_R|GRPBATTAM2_1373115295___#fragment-2