Please help 2013 ppv Tahoe anti theft was activated when put into park .

[joshdee123]

Hello I have a 2013 ppv Tahoe and yesterday after putting gas in my aftermarket radio suddenly went blank . I drove home and when I placed the car in park the engine cut off. When I tried to turn over it would not crank and the had the solid anti theft symbol . I tried a key relearn and it did not work also took the negative wires off for 5 or more minutes . Also no luck . Any other suggestions . It my only means of transportation and it runs great just happened suddenly . Thank you in advance for anyone who has any ideas .

 

[mikez71]

Maybe the antenna for the key broke or got disconnected?
I think it's a wire coil that goes around the key cylinder.. theft deterrent module I guess it is called...

Alarm Module: Service and Repair — 2013 Chevrolet Tahoe 4WD V8-5.3L Service Manual | Operation CHARM

Detailed repair manual for the 2013 Chevrolet Tahoe 4WD V8-5.3L.

charm.li

If you have a spare key, might be worth a try.
This makes me want to disable VATS! Good info on the system below...
(I guess we have 'Passkey III')

https://pcmperformance.com/programming_files/GM_VATS_RELEARN_PROCEDURE.pdf

Just looked through some older threads looking for a photo if the theft module, and saw that for one person, his ECM took a dump!

Best to find someone with a good scanner...

 

[Doubeleive]

Hello I have a 2013 ppv Tahoe and yesterday after putting gas in my aftermarket radio suddenly went blank . I drove home and when I placed the car in park the engine cut off. When I tried to turn over it would not crank and the had the solid anti theft symbol . I tried a key relearn and it did not work also took the negative wires off for 5 or more minutes . Also no luck . Any other suggestions . It my only means of transportation and it runs great just happened suddenly . Thank you in advance for anyone who has any ideas .

explain how you did the key-relearn?
I am asking because there is different information out there depending on where you look
also did you check all your fuses? and how much voltage does the battery show at the battery terminals?