It's been real cold here in the Northeast for 2 days.. Days with windchill in the negative's. I plug my 05 in at night even if its 30 out and this morning she started up fine but at 1500 rpm, no power and it was bucking. I thought the fuel gelled up on me but it turns out the dealer had to replace the fuel filter.. They charge $125 . And the truck has 13,000 miles. I'll be changing my own next time...