1999 Chevrolet Tahoe Q&A

1999 Chevrolet Tahoe Question: Passlock Theft deterrent

Prior to having our ignition switch replaced, our Tahoe horn would honk when attempting to turn key unless lights were activated before turning key. Shop is saying that this is after market and feature not offered. We purchased new with Starter Interrupt System and Passlock Theft deterrent. How can I verify that this feature exists with horn honking when trying to turn key on? -
Answer 1
unfortunately the repair technician/facility is correct, this is an aftermarket antitheft system although it could have certainly been installed by the selling dealer prior to your purchase. having said that i do not understand why this would be an issue as the repair technician/facility should( in my thinking) and can re-attach the wiring for it and everything should work as it did before -