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The security control stays on?

Tiny
JAB16001
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 101,370 MILES
The security control stays on, I am the original owner and even the dealer has tried 4 times to correct. They have replaced the key switch, harness and the pickup unit for the key and no success. Every time I have it towed to the dealer it starts. But when I get it back it seems to show again soon. Now it will not go away
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Sunday, August 9th, 2009 AT 8:21 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,400 POSTS
Here are some additional steps and considerations to address the problem:

Resetting the System:

Passlock System:

Passlock Sensor Replacement:

Key Programming:
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Thursday, August 13th, 2009 AT 12:52 PM
Tiny
JAB16001
  • MEMBER
  • 4 POSTS
No it does not start now I understand that the security cuts off the fuel system
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Thursday, August 13th, 2009 AT 3:59 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,400 POSTS
You are correct. It shuts off fuel and spark to the engine. I hate to say it but the only place that I know of that has the proper test equipment to locate the problem is a dealer.
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Thursday, August 13th, 2009 AT 9:11 PM
Tiny
JAB16001
  • MEMBER
  • 4 POSTS
I understand that however I am out 2000.00 and still have not had a dealer fix it yet in 4 shots at it. Even had it to diffrent chevy dealers
I was told it could be in the body control module, but I understand that needs programming
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-1
Friday, August 14th, 2009 AT 3:35 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,400 POSTS
I don't believe the BCM will cause this type of problem. I believe it has to do with the sensor either in the key or steering column.

What have the dealers done thus far?
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Friday, August 14th, 2009 AT 11:35 PM
Tiny
JAB16001
  • MEMBER
  • 4 POSTS
I understand that they have replaced the key switch, the pickup unit and the wiring harness for it
everytime it is towed it starts when it gets there. Last time I even tried it after it was on the tow truck and it did not start, but when it got to the dealer and it was lowered to the ground it started
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Saturday, August 15th, 2009 AT 7:15 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,400 POSTS
It sounds like you have the same type of luck I do. Honestly, I believe there is a short in the security system and not the BCM.

User notes: This happens to me and it was the coil. Changed starter and it was good
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Saturday, August 15th, 2009 AT 8:57 PM

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