Good afternoon. I've owned my 2009 Enclave for 8 years now and just replaced the timing chain, now the vehicle will not start. I followed the Cloyes instruction video and manual instructions for this. I have now taken it apart 3 times to ensure the timing is correct and it still will not start. The engine turns as if starting but just fails to start. Anyone have similar issues? BTW the chains are a pain to do although I've gotten pretty proficient at getting to them. Any help would be greatly appreciated.