Posted 01 January 2014 - 11:58 AM
Yes, I can almost guarantee you it isn't the starter. The other guys are right about the flapper valve in the exhaust. If it was really cold that day, that is probably the problem. I can tell you another possibility that could possibily be the issue. Two years ago, I bought a new 2012 Silverado Ext. Cab and drove it home late in the afternoon. The next morning, I attempted to start the truck to go back to the dealership to finish up some loose ends. The truck would not start. I made phone call to the dealer, the saleman, to no avail. I finally went in the house and got the other key and tried it. The truck started like it was supposed to. Long story short, the second key was never programmed to the truck properly. When I got to the dealership, the New Car Delivery Manager (the guy who is responsible for checking you out on all the technology aspects of your new vehicle) showed me how to program the key. They both worked like a champ after that. Today with all the technology crap on these vehicles, you never know what little idiosyncrosy is causing your issue. Good luck with your new vehicle, once you get it started.
2014 GMC Sierra Denali 6.2L, Crew Cab, Undercover painted Bed Cover, Bed Rug, Cat Back Duals w/ 22" Magnaflow, 22" SEY Wheels, Lloyd mats, XPEL Clear Bra, Painted to match fender flares, Painted to match molded GM mud flaps, red caliper covers by MGP, Vinyl wrapped to match front air dam, Tailgate light bar, 2" Rough Country Level Kit, Chrome GM Fuel Door, Chrome Tow Hooks, Chrome tail gate handle, Sport Graphic Pkg, Performance Tune by PCM of NC, Airaid CAI System, AVS Chrome Aeroskin, More chrome when available,???