Sorry 66 is not quite correct
Your 2wd 1500 Silverado is towable.
We currently have a 2004 1500 Silverado 2wd and were told the same thing, by trade I am a mechanic/automotive electrical engineer, so I did lots of research and as expected got lots of mixed yes/no answers to my "can I pull my truck" question.
I soon learned that most of the no's or "don't know" answers were driven by the "I don't want to be sued" mentality that pervades the US way of thinking.
Your right im not originally from the US, im from a country that has the reputation of being able to build anything with number 8 fencing wire, New Zealand.
Anyway that's a different subject and hey im not trying to offend anyone I love the US and the people, after all a married a southern belle.
Ok so back to the issue.
You CAN tow you truck in "N" neutral for up to around 200 miles at a time.
It should then be unhooked, started and taken for a short drive "5 mins" is fine, just to lube the trans internals again.
We have just pulled our 2wd Silverado from Las Vegas to Missouri over three weeks, we only averaged about 200 miles a day anyway, so stopping and running the truck was not an issue,
If I felt we were going further we would just unhook the truck from the Blue Ox tow rig and go for a quick squirt around the local town or area.
If we had stopped over night and had not run the truck the end of the previous day, I would unhook it and go for a burn before re-hooking it and then pulling it for the new day.
Since arriving back in Mo just over a week ago I thought id drop the trans pan, check the filter and fluid and see if there were any tell tale signs of wear from this exercise.
The results justified my initial investigations, no adverse affects to the trans components, filters or fluid.
We have been driving the truck daily since, on both highways, interstates and suburban streets and the trans performs as good as it did prior to being pulled from Vegas.
We had driven the truck down to Las Vegas to pick up the RV and have noticed NO difference in the trucks behavior.
The truck is easy to pull behind our V10 bounder 34 gaser and tracks really well, we also did not notice any effect on the front tires as a result of being used as a toad.
Hope this helps
Rusty & Kelly Glen
2000 Bounder 43ft double slide > constantly evolving toad, full timers.
Country entertainer/RV Tech/ Mechanic