- Joined
- Oct 7, 2007
- Messages
- 720
- Location
- Amherst, NY
- Corvette
- 1996 Torch Red Coupe (Prior 1988 and 1989)
Boom made the point that you should not hear the pump run during this condition and that this may be pointing us to another issue. Vetteoz commented that the fuel pump has nothing to do with VATS. My experiences indicate that the fuel pump will run for a few seconds, even if the security light stays on. So the rails get primed regardless. However, if the pass key module is not enabled, then the ECM is not properly signaled, forcing the ECM from ever pulsing the injectors during crank. As long as that security light stays on, we know we have at least one issue to resolve.