  The experimental uncertainties in G between different experiments have
important implications for helioseismology. We show that these uncertainties
for the standard solar model lead to a range in the value of the square of the
sound speed in the nuclear region that is as much as 0.15% higher than the
inverted helioseismic sound speed. While a lower value of G is preferred for
the standard model, any definite prediction is masked by the uncertainties in
the solar models available in the literature. However future refinements of
helioseismology with an accuracy of the order of 1E-3 to 1E-4 in the square of
the sound speed, especially in combination with precision measurements of the
8B solar neutrino flux should be capable of independently testing these
experimental values of G.
