"No start" due to anti-theft system failure on Chevrolet 2500 Pickup

Problem Description and Possible Solution
The anti-theft system may fail causing a no start condition, the security light may illuminate. Our technicians tell us that the ignition switch may need to be replaced to correct this fault.
Problem Data
RepairPal Verified
Average mileage: (–)
1 model year affected: 2000
2 people reported this problem
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Keeps flashing brake problems on dash and will not engage starter