Electronic Journal of Differential Equations, Vol. 2012 (2012), No. 37, pp. 1-10. Title: A non-resonance problem for non-Newtonian fluids Authors: Omar Chakrone (Univ. Mohammed I, Oujda, Maroc) Okacha Diyer (Univ. Mohammed I, Oujda, Maroc) Driss Sbibih (Univ. Mohammed I, Oujda, Maroc) Abstract: In this article we study a highly nonlinear problem which describes a non-Newtonian fluid in a specific domain (symmetric channel). This fluid is subjected to pressure of known differences between two parallel plates. We establish the existence and uniqueness of a weak solution. Our solution method is based on a minimization technique when the nonlinearity is asymptotically on the left of the first eigenvalue of the operator k-Laplacian. Submitted May 17, 2011. Published March 07, 2012. Math Subject Classifications: 74S05, 76T10. Key Words: Non-Newtonian fluid; k-Laplacian operator; eigenvalues; variational method.