Thanks for that detailed post. I did change the rear airbags myself, so it is possible I could have over tightened them. When I was using INPA and I pumped up the bags too high and got them stuck, I loosened the air line I noticed I move it a little and heard air come out. I tried to use some tape on the threads and it seemed to not be loosing air but it still may be leaking.

Also, in part number 1 in the diagram, is that visible outside the transmission or do I have to drop the pan first?

And damn truck struck again this morning. I haven't really driven it the past couple of days but to move it around the driveway, but noticed it was shaking really bad in idle but smoothed out when I gave it gas. I do know that one of driver's engine mount is broken (it is a top priority to get fixed) so I thought that might be the issue and the fact that it is so cold. But I got the flashing check engine light. I ran the codes with a quick scanner because I was in a hurry and got codes P0300, P0304, and P0308. So misfires in cylinders 4 and 8. I will scan it with DIS when I get back. I am hoping I just have two bad coils.