Wasn't this move already in the cards?  GM decided some time ago to tool up the Mexican plant for the GMC Terrain model, but not Ingersoll.  So, as I understand, Ingersoll is specialized to build just the one model, the Chev Equinox, going forward.  All the extra work in the past year was to accommodate both old model and new model production in parallel.  I am sure the union and the workforce knew that they were going through a surge in work due to that fact.