Went to dealership and picked up my vehicle. I asked the service consultant to show me in writing where this is a 1 time deal. He had to make 3 phone calls before telling me (not show me in writing) that because the service work was done before (timing chains and reprogram of the computer for shorter intervals on oil changes) that it makes the special warranty null and void. I've never been so aggravated in my life. How can they say that when the same problem is happening again. Like I said before.... no where does it state in that warranty that it's a 1 time deal. GM should honor and back up their warranty period. Only thing I can do now is wait on Corporate to call me back with their decision. Hopefully it will be good news.