No, I'm pretty sure they are not the same.
It's been more than a year sense I installed Tim's front wheel bearings, but I think they are bigger/different than your 4400 wheel bearings.
Tim's COE is a good bit bigger and heavier than even a 2 ton Chevy, and you have a 1.5 ton which I believe has even smaller/different wheel bearings than the 2 ton.
All just guesses on my part..
A parts manual will let you know for sure.
Take your old bearings to NAPA and see if they can get them.
And or call "chevyb" and see if he has them in stock, he'll have a pretty good idea what you need just from your year and model number.
Grigg
