I have a 2007 chevy 2wd tahoe 5.3. OS 12605898 how can i disable the vats. The only thing I changed to the vats paramters are G1204-no, G1208-disabled, G1210-theft disabled, G1216-no. It starts and then turns off. I have read something about a vats patch for E38 ecms being in B9903. But my tune does not contain B9903. What exactly is this vats patch?