2004 GMC Canyon

Computer problem
2004 GMC Canyon 4 cyl Two Wheel Drive Manual 65000 miles

I don't have the anti theft system installed in this truck, but every now and then the anti theft light flashes and I can't start the vehicle. How long I have to wait before I CAN get it started again seems to be quite random as well. Is there a way to permanently disable this system so I don't have to bother with it ever again?
Denny jones
February 5, 2010.

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