2007 V6 4.0 Won't Start

I've been reading all the other threads here and on the net about '07s not starting, read the TSB about them. I just started having this issue this past week. I never had an issue before. I am the original owner. It's happened 5 times so far, but odd thing is, it works fine later in the morning when it warms up. Right now, it just cranks but does fire. Truck is currently in AZ but had previously been in Colorado and never had any issues starting up in the winter there.
I've tried the other key and disconnected the battery, plugs look fine, filter fine. Not sure what else I should do. I'm 99% sure it'll start right up after it warms up which makes me wonder even more. It's an auto with about 17K on it. Any suggestions? Thanks.

 

I think you are on the right track with the tsb. I wouldn't be surprised if that's your problem. Did it end up starting like you expected?

 

Started right up when it got warmer.