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Need "Column Lock" help

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Old Sep 26, 2011 | 10:17 AM
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Default Need "Column Lock" help
And YES I read the sticky before anyone asks (just not the entire 82 pages).

Here's my problem...I was biten by the column lock bug this weekend so I disconnected the negative battery cable, pulled both PCM A & B fuses, and pulled BCM fuse 25. I then took the 6 month old battery to the parts store to be tested and it passed their load test and showed a 95% charge, so they charged it to 100%. I then put everything back together again and I still get the "Pull Key Wait 10 Sec" message....followed by the "Service Column Lock" message. I repeated the above steps numerous times to no avail. So my question is even though my column unlocks (i can actually turn my steering wheel) will installing a CLB keep my fuel from being cut off?....or will i have to take my car to the $#%^! dealer first?
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Old Sep 27, 2011 | 10:47 AM
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Yes the column locks when the key is removed....and unlocks when key is inserted.
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Old Sep 28, 2011 | 11:36 AM
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Originally Posted by 8VETTE7
That helps a lot. Tells me that you likely have a GM K Harness installed and that the relay portion of the K Harness has failed. We should be able to get the car driveable pretty easily.

I'll PM you some additional info.......
No GM K Harness has been installed. I refuse to take my car to the dealer so i don't have ANY recalls done.

Thanks for the help.
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Old Sep 28, 2011 | 01:41 PM
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Originally Posted by 8VETTE7
Check your PM's again. If you are experiencing the fuel shutoff as the first post indicates, then some type of column lock work was done by the dealer. The 2mph fuel shutoff was not set at the factory. It resulted from a dealer flashing the PCM with an image that has the fuel shutoff set to 2mph.

Get a copy of the GMVIS for your VIN and look at the service history for reference to 01044, the predacessor of the NHTSA forced recall.
Interesting....cuz my car was at the dealers just twice, one time back in '03 for a new tranny install (done under warranty) and again back in '05 for a IPC replacement (also done under warranty). Both times i instructed my service addvisor and the mechanic (whom I know) not to flash my PCM becuz of my dyno tune. Each time the car was return it ran as if nothing changed (tune wise). So could it be possible for them to have flashed the PCM w/o affecting the tune?
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Old Sep 29, 2011 | 08:58 PM
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WOO HOO....my vette is and running again.

Thanks 8VETTE7 for all the info!!
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Old Sep 29, 2011 | 09:32 PM
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So, exactly what was the fix?
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Old Sep 29, 2011 | 09:39 PM
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A Column Lock By-Pass (CLB).
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Old Sep 29, 2011 | 09:46 PM
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Thanks for educating a newbie. Workin' hard to keep up.
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Old Sep 29, 2011 | 09:47 PM
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Originally Posted by 8VETTE7
Car had neither a GM K Harness nor were any of the fuses blown that can affect the Column Lock logic in the BCM. The conclusion was that the microswitch in the lock motor that responds "complete" to BCM commands had failed. Installed a CLB and the car is driveable.
What he said!!
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