Tarr Chevrolet Co Inc

My mother recently traded in her truck for one from Tarr Chevrolet. My mother lives in NY and 6 wks after purchasing the truck needs a new engine and transmission. An extended warranty was purchased with the vehicle, but turns out to be worthless. The warranty company denied the claim due to the fluids not being changed regularly and causing damage. My mother has owned the vehicle for only 6 weeks and the last 2 weeks it's been in the shop. She has put a little over 1,000 miles on it, mostly driving back to NY. Tarr Chevrolet has not done anything to fix the vehicle or situation.