Re: Just got my truck, key won't turn in door lock
It could be several things, but first I would spray some lubricant in the keyhole. Then run your key in and out quickly about 10 times. This may free up some sticking pins. If this don't work, pull the lock out and take it to a locksmith to repair. Just remove the clip from the edge of the door to remove the lock cylinder. Don't let the rod drop inside the door or you will be removing the door panel needlessly.
Also make sure you try both sides of your key. It may just be a bad copy, and one side works better than the other.