  For the Szekeres system which describes inhomogeneous and anisotropic
spacetimes we make use of a point-like Lagrangian, which describes the
evolution of the physical variables of the Szekeres model, in order to perform
a canonical quantization and to study the quantum potentiality of the Szekeres
system in the content of de Broglie--Bohm theory. We revise previous results on
the subject and we find that for a specific family of trajectories with initial
conditions which satisfy a constraint equation, there exists additional
conservation laws for the classical Szekeres system which are used to define
differential operators and to solve the Wheeler-DeWitt equation. From the new
conservation laws we construct a wave function which provides a nonzero quantum
potential term that modifies the Szekeres system. The quantum potential
corresponds to new terms in the dynamical system such that new asymptotic
solutions with a nonzero energy momentum tensor of an anisotropic fluid exist.
Therefore, the silent property of the Szekeres spacetimes is violated by
quantum correction terms.
