  At the Tevatron, the most promising channel to detect supersymmetry is three
leptons plus missing energy, where the leptons are $e$'s and/or $\mu$'s. This
final state appears from the production of chargino and second lighetst
neutralino. However in grand unified models with universal scalar masses at the
grand unified scale, this final state mostly consists of $\tau$'s which are
hard to detect. We show that for some regions of non universality in the scalar
masses at the GUT scale based on unifying groups like SU(5) or SO(10), the
final state mostly consists of 3$l$+${\rlap/E}_T$ and $\tau ll$+${\rlap/E}_T$.
The first mode has very high detection efficiency and the second one is
expected to have high detection efficency as well. We also show that these
models can have enough events in these modes to be detected in RUN II.
