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2006 CTS
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I have a 2006 CTS that will crank when I turn the ignition but will not start.

The car has a half tank of gas and all fluid levels are good. The car sat for a week while I was on vacation. I go to turn the ignition and the engine just cranks but does not start. I tested the battery and I have 12 volts. I do have a check engine light on but i had it tested last week and they said it was my O2 sensor. No other problems before this issue. I turn the key to the ON position and my battery light stays on (no flashing). Does this mean I have a spark problem?

Any thoughts?
 

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2005 Cadillac CTS 3.6 Sport Luxury
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717 Posts
Tried jumping it off to be sure its not the battery, also tried checking volts when the ignition is set to on, just because it reads 12v doesnt always mean it has 12v, as soon as it goes under load it could drop below the cutoff voltage where the battery saver says, nu-uh not starting at that voltage.
If that all checks out ok, could be the crank sensor.
if you have a scan tool, pull off your engine codes.
 

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87 Brougham, 1969 Calais, 95 FWB, 07 SRX, 07 ESV
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4,246 Posts
Did you check all of your fuses? Also check for fuel pressure, could be your fuel pump going or a bad fuel filter.
 
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I have a 2006 CTS that will crank when I turn the ignition but will not start.

The car has a half tank of gas and all fluid levels are good. The car sat for a week while I was on vacation. I go to turn the ignition and the engine just cranks but does not start. I tested the battery and I have 12 volts. I do have a check engine light on but i had it tested last week and they said it was my O2 sensor. No other problems before this issue. I turn the key to the ON position and my battery light stays on (no flashing). Does this mean I have a spark problem?

Any thoughts?
Hello alecfrank,

I apologize for the trouble you are experiencing with your CTS. I see the community has engaged with your thread and are offering insight to what could be the issue. Are you thinking about working with a technician on this vehicle concern? If you would like to discuss this, please reach out to me via private message.

Laura M.
Cadillac Customer Care

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Mine is doing the same thing right now. Ran fine the day before but now won't start.
Hello hdarga,

I apologize your vehicle is experiencing issues with not starting also. If you would like to further discuss this concern, please reach out to me via private message.

Laura M.
Cadillac Customer Care
 

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[Moderator edit]According to Google Translate:
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