Anti theft system

2005 CADILLAC CTS
102,000 MILES • V6 • 4WD • AUTOMATIC
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JWILLIAMS632
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My car is saying service the anti theft system, and the gauges are not working, key wont come out
Mar 10, 2019 at 12:00 PM
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STRAILER
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This car does this when the battery goes bad. can I ask if the headlight turn on nice and bright? Please check out his guide:

https://www.2carpros.com/articles/car-battery-load-test

Please run down this guide and report back.
Mar 12, 2019 at 10:44 AM