Duramax Won't Start

I want to thank all of you for your suggestions and help. With my truck sitting out in the open, I was concerned about removing the wheel well cover to get to the filter. I was afraid that trying to remove the plastic clips could end up breaking them. My fuel tank was about 2/3rds empty so I added about 16oz of 911 and then primed the filter about 30 times. It took a little cranking, but it did turned over. I then took it out for a run and filled up the tank. I started it up this afternoon and so far so good. A neighbor of ours has a duramax and is a high school auto mechanic instructor and is going to take my truck to his personal garage and give it a complete going over before we head off to Arizona in February. But again, I'm very greatful for all of your support. You're a great group to call on.

Thanks
Ken