Car won't start?
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Everything you need to know is right there. Found it in 2 minutes on LS1.com
This happens right by cylinder inside column.
You have to have an ohm meter disconnect pass-key connector at base of coulmn & see if you get the carrect (your key) reading.
If not you can by-pass pass-key (do search tons of posts)w/a resistor.
The normal stuff batt/starter/cables are ok?

If it is a security issue, how the hell is the car going to start with no power to the ignition, etc...
Anyway, this used to happen on my old car, (vette). I used rubbing alcohol on a cotton swab to clean the contact in the key hole (and the keys). It solved my problem, I cleaned it periodically.
Good luck.
Tommy



