  In this paper, we reexamine the generalized Chaplygin gas (GCG) cosmology
with the sign-changeable interaction. The dynamical analysis show that there
exists de-Sitter attractors in this model, which means that the late-time
behaviors of the model is insensitive to the initial condition and thus
alleviates the coincidence problem. Furthermore, we find that this interaction
oscillates and tends to zero finally by numerical calculations of the nonlinear
equations. In some specific cases of initial conditions, the interaction is
positive (the energy transition from dark energy to dark matter) at high
redshift while it is negative (the energy transition from dark matter to dark
energy) at low redshift for suitable ranges of the parameters.
