Does anyone have the GM part number for the coolant overflow hose ( radiator neck to overflow bottle) ? Thanks.

Anyone? I dont find it listed anywhere. Can I use 5/16" or 3/8" ID bulk vacuum hose for this? Thanks.

Why not just go to advance auto and get jug hose.. That's what I did works great...

Thanks for the info. I wish Advance Auto was closer. I ended up going to the junk yard and got one that was in much better shape than the one I had. Mine was getting real mushy and appeared to be halfway collapsed. After 115k I guess thats to be expected.