Radiator Cap

So I went to Advanced Auto to buy a Stant radiator cap, only to find out that they don't have a 15 psi cap. (AC Delco doesn't have a 15 psi cap either.) My '95 Blazer currently has a 15 psi cap and my GM shop manual calls for a 15 psi cap.

Do I just use the 16 psi cap that Stant does make? Or is there another manufacturer out there with a 15 psi cap?

Thanks in advance.

1 lb is not much off.
But if you want a 15 lb cap try the dealer or another major parts place.
Good luck

You'll be fine, no problem at all.