Completed with thermostat error 126 on a 2011 trane upflow gas im attic 4 ton, found outside wire not connected all the way, also blower motor shakes at times, with inducer motor showing wear along with flame sensor and ingnitor. Giving the option to do all preventative repairs, minimum repairs, furnace upgrade or complete. Customer only want to do the minimum today. Unit cooling and heating at this time with no error on thermostat.