I have a 1990 Z51 and it wont start with the key. I can start it by getting it rolling and popping the clutch so I know its not the VATS. I'm thinking its the clutch switch (the one that wont let the car start without the clutch in). I took the panel off the bottom of the dash and jumped the pins on the only switch making contact with the clutch pedal, and still nothing. Is there another switch somewhere? or is this a different problem?