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It first started with key getting stuck in ignition, then dead battery. So I disconnected negative cable waited about 30 minutes then reconnected cable listened to component activate noticed throttle body engage then started, now I have to repeat process everyday, not sure what's wrong but think it maybe ecm problem or ground issue?? Someone please help..

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:welcomesmiley:

I believe that the 2005 model year was the last year that you could read the OBD codes through the dashboard (A/C buttons, codes displayed on the DIC). There is a link in my signature block on how to do this with a Cadillac. If this doesn't work for you for any reason, you can get the codes for free at an Autozone and many other parts outlets. Post the codes here.

The key getting stuck in the ignition may have something to do with the interlock with the transmission shifter. If the starter solenoid is not clicking, the refusal to start can also be caused by the shifter telling the PCM that the transmission isn't in Park, or that you are not pressing on the brake. If the starter solenoid *is* clicking, or the car is cranking but not starting, I would start by checking the battery, the battery cables, and the stoplight switch, then the PRNDL switch in the transmission.

This is all just a first cut. Please let us know if the solenoid is clicking, the motor is turning over but not starting, etc. Also, post the OBD codes.

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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  • 2 weeks later...

As Jim noticed above you need to extract any diagnotic codes for failed tests or devices from the PCM.

Explain the problem you describe regarding the key getting stuck. How did you get it out?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I don't think the CTS ever had onboard diagnostic capability.

The problem is, the issue this car is having is probably caused by a B body code. It sounds like it could be related to the security system. I forget which parts distributor can pull codes, this car had CAN, will they be able to pull any codes other than P codes? Something tells me no.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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If you have OnStar, push the blue button and ask the operator to read you the codes. Make them read them slowly enough for you to write them down. If that doesn't work for you, you need a code reader. Autozone and others may be able to get the codes for you, but be sure that they get the B[ody] codes.

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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Good idea Jim about onstar. It might be worth getting a one month subscription if they do them

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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If you haven't had OnStar before in the car, you can get three months free for the asking. Just push the blue button.

WARNING: You might want to keep it if you use it in the meantime. It includes a built-in cell phone, callback in an accident, instant 24/7 access to GM tech support, emergency assistance, etc. for $20 a month (less if you buy by the year; best price is 3 years prepaid). For another $5 a month, you get a call if the car alarm goes off. You can always call the police and they can call OnStar to get the car tracked for them and even slowed and stopped, but if OnStar calls you immediately this can help find the car while the wheels and tires are still on it. For another $10 a month, you get free directions on the phone, downloaded to your nav system if you like, free reservations at hotels and such (they will even find the hotel for you), etc.

Bluetooth is included with the newer systems. I don't know if Bluetooth is enabled if you don't have OnStar activated, but I believe that it is. You can always get calls on the car's built-in phone, but if you want to make calls you need to buy minutes; the price is very good but a little complicated because they offer them by the month and by the year in different size blocks. I buy 100 minutes every year for $40. The newer cars include a WiFi hot spot for your cell phone or laptop, and you can buy huge data blocks for that through the on-board cell phone.

For the vast amount of detail in all of the options, see http://onstar.com

CTS-V_LateralGs_6-2018_tiny.jpg
-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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