Call corporate and give them an earful with the dealer and the dealers workers names and the situation of what is going on. You are covered by the lemon law, look into that. If you have to, lie to corporate a bit. If they ask something like, "well your engines running right now, correct?" And you say yes, they will just say "ok have a good day, good bye". Dont be a victim of being scammed, know your rights, and know where you legally stand. Each states lemon laws are different. Good luck, and research before calling! The phone number is on chevy or gmc's website under contact us.