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The ignition key turn all the way back, stuck?

Tiny
SHAKO BUACHIDZE
  • MEMBER
  • 7 POSTS
Dear ken, here I am again. I still have this problem. Please, answer me on these two questions:

1. I have new (re-manufactured) ECM, programmed with my VIN, but key relearn procedure can not be done. What can be reason of this? When I install new ECM and begin key relearn procedure, when I turn the ignition to the "on" position, The security light must illuminate steady or flash at least 10 minutes, but it turns off after 5 seconds and comes again after 1 minute (with message Service Theft system) and turns no more off. This must be first step to key relearn and it can not be done. What can be reason of this? I am sure, new ECM is absolutely okay.

2. When motor is running at least 30 minutes, car starts normally with the key - even if you try 20 times. Only after some hours staying off, problem comes again. So, can you maybe tell me, what happened? That is because I still think, it is not ECM-s problem.
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Monday, July 13th, 2020 AT 6:24 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,924 POSTS
Yep, the CAN may need to be reprogrammed because the BCM did not like the reprogrammed PCM. It should cost about $130.00 US at a shop.
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Monday, July 13th, 2020 AT 6:24 PM (Merged)
Tiny
SHAKO BUACHIDZE
  • MEMBER
  • 7 POSTS
Dear Ken, thanks, but what do you mean? CAN mau need to be reprogrammed? What is CAN?
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Monday, July 13th, 2020 AT 6:24 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,924 POSTS
Computer area network (CAN). here is a video that shows the job scan (not programming):

https://youtu.be/InIlnsjOVFA

Please let us know what happens.
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Monday, July 13th, 2020 AT 6:24 PM (Merged)
Tiny
SHAKO BUACHIDZE
  • MEMBER
  • 7 POSTS
Thank you so much. And how I can reprogram CAN? If I understand correctly, I must install new ECM and before key relearn procedure, I have to reprogram CAN, because the BCM did not like the reprogrammed PCM. So, if its correct, I will do it. But how? Should I just reset codes before key relearn? As you know, I am not in USA, I leave in Tbilisi (Republic of Georgia) and here are no Cadillac mechanics. :-(
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Monday, July 13th, 2020 AT 6:24 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,924 POSTS
You will need a TECH2 which is GM's reprogramming platform, so dealer or garage that has one can do it for you it should cost about $130.00 us.
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Monday, July 13th, 2020 AT 6:24 PM (Merged)
Tiny
AKNOTTS
  • MEMBER
  • 1 POST
  • 2006 CADILLAC CTS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
The theft system light is on and my keys wont come out in my 2006 cadilac cts?
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
1st make sure you have it in park and then try to turn it off then take it out. It sounds like something down in the shift interlock solenoid is having a problem. Here are diagrams to help you look at the shifter and to check the solenoid.

1 - A/T Shift Control Assembly
2 - A/T Shift Lock Control Solenoid Assembly
3 - A/T Shift Lock Control Solenoid Assembly Connector
4 - Accelerator Pedal Position (APP) Sensor
5 - Accelerator Pedal
6 - Brake Pedal
7 - Brake Pedal Position (BPP) Sensor
8 - Transmission Control Module (TCM)
9 - Transmission Control Module (TCM) Connector
10 - Fuse Block - Underhood

Check out the diagrams (Below). Please let us know what you find.

Cheers
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
MARK COLLIS
  • MEMBER
  • 2 POSTS
  • 2007 CADILLAC CTS
  • 27,500 MILES
2007 cts Service Theft system error message and key stuck in ignition
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
MARK COLLIS
  • MEMBER
  • 2 POSTS
Battery is good and I can drive car. Locked out my xm radio
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+4
Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,230 POSTS
Okay. I hate to say it but you need to have the computer scanned to identify where the problem is coming from. It is related to the security system, but without a trouble code, it becomes a guessing game. If you have it scanned, let me know what code they find and I can better direct you.
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
JONEICIA
  • MEMBER
  • 1 POST
  • 2005 CADILLAC CTS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 900,039 MILES
My key will not release from the ingnition and the anti theft system is on
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
Try stepping on the brake and pushing up hard on the gear shift lever. While keeping pressure on the lever, turn the key.

Sometimes this works, sometimes it doesn't. If not, you'll have to take it in to a shop.
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
CADDYMAN122
  • MEMBER
  • 1 POST
  • 2005 CADILLAC CTS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
I own a 2005 cadallic cts and im having these problems. The car will start but the engine temperature gauge and gas gauge do not work. Also when you try to turn the key off it will not release it. The theft deterrent light will not turn off and the traction control light will NOT turn off. If u do not know please say you don't know.

Thank you for your time.
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
DJA79
  • MEMBER
  • 2 POSTS
Remove the ecm Fuse. Its located in the fuse box under the hood. Should reset your system and be back to normal.
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
DJA79
  • MEMBER
  • 2 POSTS
More possibles. Bad battery, or low charge; will cause this problem, check first. Or bad ECM; pray its not that.
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
DEBBPIMP
  • MEMBER
  • 1 POST
Finally what is the problem? I have the same problem with my cadillac.
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
ERICHARDSON
  • MEMBER
  • 2 POSTS
  • 2004 CADILLAC CTS
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 64,000 MILES
I need help finding the anti-theft code to my car?
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Do you have a scanner?
An OBDII reader will not get security system codes
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-1
Tuesday, July 14th, 2020 AT 10:33 AM (Merged)
Tiny
ERICHARDSON
  • MEMBER
  • 2 POSTS
We got the issue resolved! Thank you for replying.
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Tuesday, July 14th, 2020 AT 10:33 AM (Merged)

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