My grandfather co-sign a car with me a few years ago. Now I am trying to trade car in and they need to signature to finish the purchase. He is in the ICU of the hospital and cannot sign anything. He cannot take care of himself and once he gets moved to an acute care facility he cannot leave. He has stage 4 lung cancer and has a ventilator in his trach so he can not talk either. How would I get limited power of attorney to finish the trade? I can prove I have paid every payment and I am the one insured on the car and not him so it is clear that the car is mine and he just co-signed to help me get it. Also how would we even get a general power of attorney because he needs that but if he cannot sign how could this work? I have been getting the run around all day and just want an answer!