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I realize this thread is somewhat old but here goes anyway.

I went for a ride today and after a mile or two I looked down and seen the "service column lock" message. I drove it home and parked it. right now it sits in the garage and the steering wheel moves freely. Now It never limited my speed and the wheel is not locked.

My question is, what should I do from here. will a CLB correct the service message or must I take it to a dealer? If a CLB will correct it, what supplier do you recommend? I don't want to try and start it for fear of the lock engaging.
 

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Discussion Starter #62
I realize this thread is somewhat old but here goes anyway.

I went for a ride today and after a mile or two I looked down and seen the "service column lock" message. I drove it home and parked it. right now it sits in the garage and the steering wheel moves freely. Now It never limited my speed and the wheel is not locked.

My question is, what should I do from here. will a CLB correct the service message or must I take it to a dealer? If a CLB will correct it, what supplier do you recommend? I don't want to try and start it for fear of the lock engaging.
Go back and read the very first post in this thread. There are also 2 videos that you need to watch. You will end up not only with an answer, but a thorough understanding of what your car is doing and what you should do.
 

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Junkman...I have a strange tale concerning the Service Column Lock message. While attempting to re-wire my Escort 9500ix radar detector to the power from my rear view mirror, I noticed the infamous "PULL KEY...WAIT 10 SECS & SERVICE COLUMN LOCK" messages. Of course this derailed my RD wiring work as I could not pull my car from the driveway without a stall (column not locked). I read the litany of remedies to get rid of the messages and I tried them all except the Recall/Bypass stuff, all with no luck. It was late so I disconnected my RD wiring and slept on it. The next morning I started the car and received no message. I even took a test drive, still nothing. Could I have triggered this message by plugging pins into various positions on the RV mirror connector plug? Maybe 'confusing' the computer. Could I be so lucky as to not really have a Column Lock issue? I remember your link/video stating that 88% are battery power related...could it be my battery was slightly drained and recovered overnight? At the time of the message, my in dash battery/charge indicated over 13v.
Sorry for so many questions, but this one is crazy. Please relay your thoughts.
 

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Discussion Starter #64
Anything is possible but the question is, which scenario is most likely?

Could you have been working on the car with both doors open, constantly draining the battery with the interior lights? No doubt, been there and done that. Could your battery terminals not be torques to 11fp as directed by the service manual? Possibly, been there and done that too. Is it that your car is not affected by this issue? Not a chance if you are driving a manual 97-2004. They are all affected by this issue.

I think you created a power issue, but I don't know enough details about what you did so that's my SWAG. However, my SWAG is derived from some very solid information based on the videos that are posted in that first post featuring Paul Koerner, a World Class GM Certified Technician. If anyone understands this issue, it is he.
 

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I agree...does not seem like it could be anything else; I guess I will just keep an eye on it. I am still a little paranoid about using the RV mirror power for the Escort...thinking it might cause the issue again. I was able to use it for power for nearly a year, do you think it could have slowly caused this issue?
 

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Discussion Starter #66
I agree...does not seem like it could be anything else; I guess I will just keep an eye on it. I am still a little paranoid about using the RV mirror power for the Escort...thinking it might cause the issue again. I was able to use it for power for nearly a year, do you think it could have slowly caused this issue?
The source of your power to the radar detector is not the issue. As long as power is not being drawn from the battery by the radar detector while the car is off, the radar detector will not be the issue. The other things that are mentioned in the Videos that Paul did are. Have you watched those videos?
 

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Yes I have...although I doubt I will pursue any remedy for the Column Lock issue until I get a hard fail. Do you know which wires are which on the 1998 Rear View Mirror connector? I know there are only 4 wires/pins and as far as I can tell are 2 red & 1 black & 1 brown. As I look at it, the top & bottom left side wires (Passenger) are red, the top right is black & bottom right is brown. I should say appear to be...since the black & brown wires look almost identical. I had the pins in the top left red & top right black for the detector. Sorry for another long reply. Thanks again for your wisdom & help.
 

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Discussion Starter #68
Attached are the documents you need but lets keep this thread about the column lock. If you have anymore strictly rear-view mirror questions, let's do another thread. ;)
 

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Becky got the "pull key wait 10 seconds" message the other day, so it's time to do the easy bypass like I did with the red C5 vert.

Thanks again for this post Junkman.:thumbsup:
 

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Discussion Starter #71
Becky got the "pull key wait 10 seconds" message the other day, so it's time to do the easy bypass like I did with the red C5 vert.

Thanks again for this post Junkman.:thumbsup:
Hell, you know that if you were closer, I'd come over and install it for her free of charge. :thumbsup:
 

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Alright...more info on my Column Lock issue and it gets interesting.
Yes, I finally received a hard fail...after a week of trouble-free driving since the initial Service Column Lock error message, i was totally down with a SCL message and the 3 mph fuel lockout. Of course i continued reading/trying every relative remedy on DC forums, all with no success, at least until today. Upon VIN review at a dealer, seems my '98 C5 had the recall performed back in 2007 (explains why my steering wheel never locks). So following a post describing the K harness assembly install, I investigated under the drivers side knee panel. I located what appeared to be the K harness assembly (Tyco 15477384) unfortunately it was just lying there, unconnected. I found the 4-wire connector and tried connecting the K harness...nada, still got the message. My friend, who also owns a C5, always seems to purchase 2 of everything, so he had a spare CLB assembly. I followed the install instructions from LS1 and it worked great. Not sure if the recall was half-assed or if the previous owner disconnected the K harness. Either way I'm happy and back on the road. Thanks to DC FORUMS!
 

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Discussion Starter #74
There were 3 revisions that covered the column lock. A lot of people are still walking around with only the second revision, which sounds like your scenario. As you now know, the information in the initial post is solid. Now you can pass that information along with this tad bit of advice.

Don't wait until your car shuts down before you decide to address this WELL KNOWN issue. ;)
 

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There may be 3 revisions, but my VIN reported the recall as completed-harness installed...which was far from the truth. Definitely smart to not wait...but my hard fail was within a week of my first instance...almost like not waiting. :laughing:
 

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Discussion Starter #77
RECALL MOD RELAY is found how?
CAN YOU OFFER MORE GUIDANCE ON LOCATING PIN 30 & PIN 87 AND HOW TO JUMP THEM A PICTURE WOULD BE GREAT
Quote on the part of the thread you're talking about. You've lost me.
 

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Quote on the part of the thread you're talking about. You've lost me.
Q: Why is there sometimes a conflict between the recall mod and my CLB?
A: For MN6 and M12 cars, the recall mod added a second relay (different from the Harness K which is the GM version of the CLB) between your BCM and your ECL in series with the orange (LOCK) wire. This is to safeguard against a spurious glitch from ever locking your ECL while you are driving (clearly GM is paranoid now). The problem is that this second relay is causing a timing glitch, which resets your CLB immediately after it switches states. The reason it works with your stock ECL is because your ECL motor (being mechanical and slow compared to solid-state logic), is immune to these timing glitches whereas the latching relay inside your CLB sees these glitches and reacts to them.

Q: For MN6/M12 cars what can I do if this situation occurs?
A: Go into your passenger footwell. Remove your BCM and locate the recall mod relay, remove it and add a jumper wire between the white wire (pin 30) and the orange wire (pin 87). Note that there are two orange wires, so make sure you get the right one!

You state remove BCM? Is that a fuse?
Locate "recall mod relay" Where is this? What does it look like?
How do I identify it?

Add a jumper wire between pin 30 and 87?
Where are the pins? Not in the footwell fuse box?
Does this refer to the wires under the dash?

My 2000 six speed has had both recalls. Lock has been removed. Battery is putting out 13+ volts but I'm getting
Service column lock and car stall if I try to move it.
I've pulled fuses 23 7 25. Still does not clear problem.

Will a column lock bypass fix anything or does the K- harness
do the same thing?

I read a post that refers to a stuck relay in the top of the footwell fuse box on the right side?

Any suggestions of how to proceed?
Thanks for your help.
 

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Discussion Starter #79 (Edited)
Okay first of all, I haven't had to do this repair because I have a 2001 A4 Coupe, which is not affected with this issue. Second, I did not do this write up, someone else did and sent it to me. I just passed it on. I do have some knowledge about this issue because of how often I've read up and researched it. So keep that in mind as I respond to your questions. Last of all, have you watched the videos posted at the beginning of this writeup by Paul Koener? If not, you really need to watch them.


Q: Why is there sometimes a conflict between the recall mod and my CLB?

A: For MN6 and M12 cars, the recall mod added a second relay (different from the Harness K which is the GM version of the CLB) between your BCM and your ECL in series with the orange (LOCK) wire. This is to safeguard against a spurious glitch from ever locking your ECL while you are driving (clearly GM is paranoid now). The problem is that this second relay is causing a timing glitch, which resets your CLB immediately after it switches states. The reason it works with your stock ECL is because your ECL motor (being mechanical and slow compared to solid-state logic), is immune to these timing glitches whereas the latching relay inside your CLB sees these glitches and reacts to them.

Q: For MN6/M12 cars what can I do if this situation occurs?

A: Go into your passenger footwell. Remove your BCM and locate the recall mod relay, remove it and add a jumper wire between the white wire (pin 30) and the orange wire (pin 87). Note that there are two orange wires, so make sure you get the right one!

You state remove BCM? Is that a fuse?
Locate "recall mod relay" Where is this? What does it look like?
How do I identify it?
The BCM stands for Body Control Module. It is the computer that is located in the passenger's side footwell. I've attached a PDF document to this post, which contains the pinouts for the connectors associated with the BCM.


Add a jumper wire between pin 30 and 87?
Where are the pins? Not in the footwell fuse box?
Does this refer to the wires under the dash?
The above document answers these questions.


My 2000 six speed has had both recalls. Lock has been removed. Battery is putting out 13+ volts but I'm getting Service column lock and car stall if I try to move it.

I've pulled fuses 23 7 25. Still does not clear problem.

Will a column lock bypass fix anything or does the K- harness
do the same thing?
Yes, the column lock bypass cable will fix these issues provided that you install it correctly. YOU MUST FOLLOW THE INSTALLATION INSTRUCTIONS TO THE LETTER.


I read a post that refers to a stuck relay in the top of the footwell fuse box on the right side?

Any suggestions of how to proceed?
Thanks for your help.
I know nothing of a stuck relay. You would need to reference that post with a link so that I can read all of the information concerning it. It could be bad information.
 

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so what are the actual chances of it locking up while you are driving?

Just bought a mInt condition 2 owner 2003 c5z06 and I am unsure if the recall was performed. I am going to follow up with a chevy dealer when they are open.
 
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