Malibu Another long running GM name, the Malibu has overcome many changes to be one of the top mid size sedans heading into its eight generation.

Chevrolet Malibu
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Platform: N-, Epsilon, Epsilon II.

Service: Theft Deterrent System

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Old May 16th, 2022, 6:28 PM
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Default Service: Theft Deterrent System

My car keeps saying Service: Theft Deterrent System
2018 Chevy Malibu premier
yesterday my battery on my key fob died and I replaced it. When I replaced it my car would lock unlock but it wouldn’t start. Nothing happened when I pressed the start button. I put the fob in the slot within my center console and it was saying something about new key
Not sure what to do I disconnected the battery and reconnected it to reset the system
That did not work
I read somewhere that it was stuck in program mode
so I held down the start button for 10 seconds which did the trick
but then the car gave me the previously mentioned warning
when I turn my car off for an extended period of time to turn it on I have to hold it down for 10 seconds everything time.
I think I might have tripped the anti theft deterrent system but I honestly have no clue
can someone help me please
Old May 21st, 2022, 7:31 PM
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Originally Posted by AveryAlpha09
My car keeps saying Service: Theft Deterrent System
2018 Chevy Malibu premier
yesterday my battery on my key fob died and I replaced it. When I replaced it my car would lock unlock but it wouldn’t start. Nothing happened when I pressed the start button. I put the fob in the slot within my center console and it was saying something about new key
Not sure what to do I disconnected the battery and reconnected it to reset the system
That did not work
I read somewhere that it was stuck in program mode
so I held down the start button for 10 seconds which did the trick
but then the car gave me the previously mentioned warning
when I turn my car off for an extended period of time to turn it on I have to hold it down for 10 seconds everything time.
I think I might have tripped the anti theft deterrent system but I honestly have no clue
can someone help me please
I had the same issue I still don’t know what was going on with our car it’s in the shop now it completely drained our car battery but your key fob probably has to be reprogrammed
Old July 28th, 2022, 4:01 PM
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Similar issue here 2019 Malibu North Edition. Cant open car with both fobs. Have to use key, alarm goes off everytime I have to enter car etc. Took to dealer around noon today, they don't have time to check, requires booking. Ended up getting oil changed. They only have time for filter replacements etc that is not an emergency.
Please pass me if there's a fix for this.
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