Cadillac dts

Asked by Jan 01, 2017 at 09:04 PM about the 2009 Cadillac DTS V8

Question type: Maintenance & Repair

My 2009 cadillac dts wont start battery is good all my lights
and radio turn on but car won't start and makes a buzzing
noise when I turn ignition

2 Answers


Just because the radio comes and the interior lights doesn't mean the battery has enough voltage to start the car. Have the battery tested with a multimeter or take it down to your local auto parts store. Should be over 12V to start the car.

1 of 1 people found this helpful.

If the battery is all the way up with voltage, then it could be either a starter problem or a bad ground strap

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