Security light is on and radio doesn't work
Car runs fine, lights work(in and out), blinkers all work, etc. Key fob not working either.
Cars & Trucks - Chevrolet - 2007 Chevrolet Chevrolet HHR LT
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Answers & Comments
Need to go dealer and have car computer reflashed and radio reprogrammed
So I took it in and the dealer did a full diagnostic test....only thing they could find was a weak voltage output. Not a dead battery, although they did charge it to be sure. Not a faulty alternator. After charging the battery everything checks out fine... the serpentine belt broke about a week before this started, my gf drove until battery was almost dead....they think that's what caused the issue even though it wasn't immediately a problem.apperently if the security system senses a weakness in the voltage it may shut down operation of the vehicle.
It sounds to me like the security system is failing the same thing happen to me. Its really common in gm vehicles. Mine started out like that and then eventually it wouldnt start sometisomes.. Check out this site, i did a lot of research and it worked great They have great customer service and the part is guaranteed so u can send it back if it doesnt work.... hope this helps ya Do It Yourself GM Security bypass