One problem related to anti-theft controller has been reported for the 1999 Chevrolet K2500. The most recently reported issues are listed below.
1999 chevy K2500 failed to start due to the factory passlock/antitheft device. . . This caused a missed day of work. . This same problem has taken place on 2 previouse dates. . . The problem clears after a undetermined amount of time "usually 15min-1/2hour" the system resets itself. . . This could have been a more seriouse problem had I needed to drive to a hospital or other emergency situation that may be un-foreseen.