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Posted on Jan 02, 2017
SOURCE: Theft-deterrent system problem
let it sit for about an hour, untouched to let it clear out of theft mode. If it doesn't start with a programmed key after that, you may have to take it into a shop and have it looked at. It may just be a bad transceiver but if any piece of the system has been replaced the keys have to be programmed with a dealership scan tool.
Posted on Oct 03, 2009
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Apr 13, 2017 | Cadillac Cars & Trucks
Jan 20, 2017 | 2003 Chevrolet Impala
The CTD system requests the IPC to illuminate the indicator only when the ignition switch is OFF. The CTD system uses the indicator in order to identify system status. For specific CTD condition that will illuminate the security indicator, refer to Content Theft Deterrent (CTD) Description and Operation .
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
SERVICE THEFT SYSTEM The radio illuminates the SERVICE THEFT SYSTEM message when the VTD system detects a failure. The radio receives a message from the theft deterrent control module via the serial data circuit requesting illumination.
This is one you need to take to the dealer , unless you have a GM factory scan tool !
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In the wiring diagrams there is a COMPUTER DATA LINES SYSTEM wire. From what I have read the radio won't cause the car not to start. Did you make sure you didn't drain the battery? Is the Theft Deterrent light on? If it is you're going to need a scanner to get the codes. This is what the Theft Deterrent system does with the radio.
I think if the Theft Deterrent light is on you will have to start there if not just diag a no crank condition.
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