Hi and thanks for using 2CarPros. Com.
It sounds like you are locked out by the anti-theft. If you haven't already, try a different key. If that does not work, here is a self test of the system from Alldata. See if it helps.
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Vehicle Theft/Security System (VTSS) Self Tests
VEHICLE THEFT/SECURITY SYSTEM (VTSS) SELF TESTS
In order to obtain conclusive testing of the Vehicle Theft Security System (VTSS) the Body Control Module (BCM) and all of the electronic modules that provide inputs to, or receive outputs from the VTSS components must be checked. The most reliable, efficient, and accurate means to diagnose the VTSS requires the use of a DRB scan tool and the proper Diagnostic procedures. The DRB scan tool can provide confirmation that the Programmable Communications Interface (PCI) data bus network is functional, that all of the electronic modules are sending and receiving the proper messages on the PCI data bus, and that the BCM is receiving the proper hard wired inputs and relaying the proper hard wired outputs to perform its VTSS functions.
See the proper Diagnostic Procedures and the Vehicle Theft Security System menu item on the DRB scan tool for the procedures.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO AIR BAGS AND SEAT BELTS/AIR BAGS BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
1. Check the fused B(+) fuse in the junction block. If OK, go to Step 2. If not OK, repair the shorted circuit or component as required and replace the faulty fuse.
2. Check for battery voltage at the fused B(+) fuse in the junction block. If OK, go to Step 3. If not OK, repair the open fused B(+) circuit to the Power Distribution Center (PDC) fuse as required.
3. Check the fused ignition switch output (run' start) fuse in the junction block. If OK, go to Step 4. If not OK, repair the shorted circuit or component as required and replace the faulty fuse.
4. Turn the ignition switch to the On position. Check for battery voltage at the fused ignition switch output (run/start) fuse in the junction block. If OK, go to Step 5. If not OK, repair the open fused ignition switch output (run/start) circuit to the ignition switch as required.
5. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Disconnect the instrument panel wire harness connector from the Sentry Key Immobilizer Module (SKIM) connector receptacle. Check for continuity between the ground circuit cavity of the instrument panel wire harness connector for the SKIM and a good ground. There should be continuity. If OK, go to Step 6. If not OK, repair the open ground circuit to ground as required.
6. Connect the battery negative cable. Check for battery voltage at the fused B(+) circuit cavity of the instrument panel wire harness connector for the SKIM. If OK, go to Step 7. If not OK, repair the open fused B(+) circuit to the junction block fuse as required.
7. Turn the ignition switch to the On position. Check for battery voltage at the fused ignition switch output (run/start) circuit cavity of the instrument panel wire harness connector for the SKIM. If OK, use a DRB scan tool and the proper Diagnostic Procedures to complete the diagnosis of the SKIS. If not OK, repair the open fused ignition switch output (run/start) circuit to the junction block fuse as require
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Let me know if this helps or if you have other questions.
Take care,
Joe
Sunday, August 30th, 2020 AT 10:47 AM
(Merged)