Hondru Chevrolet of Manheim

Bought a brand new Chevrolet Silverado. They never informed me they completely replaced the engine before selling it to me. They obviously screwed something up because the truck is stalling in traffic and now Chevy dealers in my area refuse to work on it even though there at 1,300 miles on it. No one from Hondru Chevy of Manheim has offered to do anything for me, let alone an apology. Very unethical. File a formal complaint with General Motors and now am working with an Area Service Manager trying to force some GM shop to take this truck and fix it.