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"Service Theft Deterrent System" Vehicle won't start - new battery

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Old December 15th, 2017, 6:14 PM
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Default "Service Theft Deterrent System" Vehicle won't start - new battery

New Battery in and now this.. What do I do? Chevy Silverado
VIN 1GCRCPEO2BZ326431
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Justin Silvaggio (June 6th, 2020)
Old June 6th, 2020, 5:50 PM
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Originally Posted by rjal
New Battery in and now this.. What do I do? Chevy Silverado
VIN 1GCRCPEO2BZ326431
im having the same issue with a truck I just bought from CarMax a week ago 11k miles.....my truck will not start and the car dealership won’t get back to me
Old June 10th, 2020, 7:16 PM
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Hey guys,

I am not sure exactly what year your trucks are but i believe they should follow the same procedure.

If this doesn't work let me know i'll try finding the exact instructions.

But to go off memory:

1. close all doors (I don't think you have to lock)
2.Enter your key in the ignition and turn it to on but do not start the engine
3. Once the key is on theft detterent will display.
4. wait 5-10 minutes it will go away
5. turn key back to off but do not pull the key out then turn the engine on to see if it starts.
In my experience this usually works the first time.
HOWEVER i've heard the official instructions to repeat steps 3 and 5 2 more times then pull the key out put it back and start the engine.

Let me know if that helps this is usually a quick fix!
Old October 19th, 2020, 6:29 AM
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Holding down the unlock button on key while starting the engine has worked for me.
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therewolf (December 26th, 2020)
Old December 26th, 2020, 9:00 PM
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Default Same new battery now won’t start

But my instrument panel won’t even light up. I have interior lights but truck won’t turn over. Battery was bad, but autozone replaced with new on and after connecting the cables this all happened.
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