"Service Column Lock"

[racingvette]

Originally Posted by Halnazz

Well i have tried everything i have read. call days chevrolet and found out i have had the recall done. he advised me to get the by pass and said when i hook it up the code should go away, but if not it could be the bcm but he doubt that's the problem. so i gess i will see when the by pass gets in thanks

If the column lock pin is stuck causing the steering wheel to be locked putting the bypass in will not solve the problem
You first must get steering wheel free and then install bypass.

Hard pulls to the right on steering wheel with charged battery can free wheel up

The real fix as the age of C5s is via tuning the PCM and have the tuner turn off CL, limp mode, 1.5 MPH max and 15% max throttle angle.

May be wise also to have them turn VATS off.

Also have them turn all DTCs related to CL OFF

[Halnazz]

the steering wheel Is unlocked, it's just the code I guess. I'm going out of town for work for 3 days. With the steering wheel unlocked can I install the by pass? Or will that clear the code? I know I have read that it has to be cleared before the by pass was installed or it won't help. Anyone have the wiring diagrams and locations of all the parts and relays? I have 3 days to find another plan of action. Right now it's just a sexy boat anchor. Lol

[racingvette]

Via the DIC go into diag mode and clear out the DTCs and see if it returns

If CL DTC comes right back clear DTC again, turn off Ign key and do not turn back on until bypass is installed but again it would be best long term to shut CL and limp mode off via a tune of the PCM.

Bypass should come with how to install

[Halnazz]

Kool. Thank you for your help. Will go and get limp mode removed when it's running again.

[laidbackzo6]

I have an o2z and have the same problem,going to try new battery even though mine says 13v. I have already had the most currant recal for this back in 2006. I see on other forums to run a jumper wire between two specific pin numbers on the bcm. Can somone send me a bcm wireing diagram that shows the pin numbers position? Please. Help. I just had battery unhooked while putin headers on than went to start,service colum lock bs on dash,colum is unlocked,runs n quits at 1.5 mph :(

[Melsy]

There are(were) two TSB's about the column lock problem. I have an '03 Z06. First time they used some kind of jumper wire I thinkl. Then there was a second TSB and I watched the job. They do (did) remove the physical locking mechanism and installed a "jumper harness." Hope this helps.

[Halnazz]

Well I made it home. Got the by pass by time I got here. Changed the batt before I left. Put in the by pass. Hunted for hours for the k harness and can't find it. So I put the by pass in to find out no help. I'm lost. I'm about ready to roll it off a cliff. Lol. Next I guess I'll have it towed to a preformance shop and pay there fee. I can't even stand looking at it any more

[racingvette]

Originally Posted by Halnazz

Well I made it home. Got the by pass by time I got here. Changed the batt before I left. Put in the by pass. Hunted for hours for the k harness and can't find it. So I put the by pass in to find out no help. I'm lost. I'm about ready to roll it off a cliff. Lol. Next I guess I'll have it towed to a preformance shop and pay there fee. I can't even stand looking at it any more

Not easy to help when people do not state the model and year of their Corvette as the GM fixes were different depending on year/model and type of trannie

Exactly what is the problem, is steering wheel locked, what are the DTCs, how is the car reacting ?

K harness was part of GM's fix and not part of the original C5

997-2000 A4's: Install wire kit (Harness K), remove and discard lock plate, install the "cam orientation plate" where the lock plate previously resided. No PCM flash required.

1997: All M6's and Export A4's: Reprogram and check with Tech 2 w/ SPX Tool. (Note: Recalled, but delay on getting fixed (as of 9/1/04) since GM hasn't provided a part required to complete it.)

1998: All M6's and Export A4's built through 5/28/98: Reprogram and check with Tech 2 w/ SPX Tool. (Note: Recalled, but delay on getting fixed (as of 9/1/04) since GM hasn't provided a part required to complete it.)

1998 built on or after 5/28/98 and CSC 01044 was already performed: Reprogram and check with Tech 2 (no SPX tool)....if CSC 0144 wasn't performed, then install K harness wire kit 88952428 before reprogram and Tech 2 check.

1999-2000: All M6's and Export A4's: same as the 1998 built on or after 5/28/98, i.e., Reprogram and check with Tech 2 (no SPX tool)....if CSC 0144 wasn't performed, then install wire kit 88952428 before reprogram and Tech 2 check.

2001-2004: All M6's and European A4's (note GM didn't say "export") Reprogram PCM for limp mode, minimum MPH and control of drive by wire

2001-2004 A4's:----NOTHING----- they didn't install the Electric Column Lock (ECL) on those years, in the U.S., after experiencing so many problems

[racingvette]

Model: CORVETTE
Affected Year(s): 1997 1998 1999 2000 2001 2002 2003 2004
Units Affected: 5132
TC Recall #: 2004052
Manufacturer:
Campaign Code: 04006

Recall Details
On certain vehicles equipped with Electronic Column Lock systems (ECL), when the ignition switch is turned to "Lock", the ECL prevents turning of the steering system.
When the vehicle is started, the ECL unlocks the steering system.

The vehicle is designed so that if the column fails to unlock when the vehicle is started and the customer tries to drive, the fuel supply will be shut off so that the vehicle cannot move when the vehicle cannot be steered.

If voltage at the Powertrain Control Module (PCM) is low or interrupted, the fuel shut off may not occur and the vehicle can be accelerated while the steering system is locked.

Correction: On vehicle equipped with an automatic transmission, the dealer will disable the steering column lock by removing the column lock plate.
When the ignition key is removed, the transmission shifter will lock but the steering column will not lock. On vehicle equipped with a manual transmission, the dealer will reprogram the PCM. The steering column on these vehicles will continue to lock when the key is removed.

[racingvette]

Last GM TSB on this issue

GM found on MM6/M12 based Corvettes that the so called fix for column lock still allowed PCM to command fuel when CL was in a locked state so this new fix is to treat the manual based C5s as the same fix for A4 in removing column lock plate.

GMP06-029 - 05081 Special Policy Adjustment - Electronic Column Lock System
MODELS:

1997-2004 CHEVROLET CORVETTE EQUIPPED WITH A MANUAL TRANSMISSION (MM6/M12)

1997-2000 CHEVROLET CORVETTE EQUIPPED WITH AUTOMATIC TRANSMISSION - EXPORT VEHICLES ONLY

2001-2004 CHEVROLET CORVETTE EQUIPPED WITH AUTOMATIC TRANSMISSION - EUROPEAN EXPORT VEHICLES ONLY


DESCRIPTION:
SPECIAL POLICY #05081
DATED: FEBRUARY 8, 2006
IMPORTANT:

BEFORE PERFORMING THIS REPAIR, VERIFY THAT RECALL 04006 HAS BEEN PERFORMED ON THE VEHICLE (LABOR CODES V1144, V1145, V1153).
IF THE REPAIR WAS NOT PERFORMED, THEN PERFORM THE REPAIR IN RECALL BULLETIN 04006C, AND SUBMIT THE CLAIM USING THE APPROPRIATE RECALL LABOR CODE.


DESCRIPTION:
Some customers of 1997-2004 Chevrolet Corvettes equipped with a manual transmission (MM6/M12); 1997-2000 Chevrolet Export Corvettes equipped with an automatic transmission; and 2001-2004 Chevrolet European Export Corvettes equipped with an automatic transmission may have a condition where the column lock may fail to unlock the steering column when the vehicle is started.

SPECIAL POLICY ADJUSTMENT:
This Special Policy covers the condition described above until February 29, 2008, regardless of ownership. The repairs will be made at no charge to the customer.

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after February 8, 2006, are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to February 8, 2006, must be submitted to the Service Contract provider.

EFFECTIVE DATE:
Owner mailing is scheduled to begin February 15, 2006

[tak06]

If you google "LMC5 column lock", you will find the latest and least invasive method to resolve this common problem with the C5, there are many forums dealing with this annoying issue and unlike the Column Lock Bypass which involves removing interior panels and maybe a little intimidating to install, the LMC5 module is a 20 minute installation and very simple install. I have not encountered this problem on my 02Z yet but I keep this module in my glove box and some simple tools in case of an emergency so as not to become stranded.

[Halnazz]

Mine is a 02z. Ive looked at a lot of forms, googled the problem and I've tried everything that anyone has tried. I'm done with it. Gonna have it towed and let someone else deal with it.

[sodian]

Originally Posted by Halnazz

Mine is a 02z. Ive looked at a lot of forms, googled the problem and I've tried everything that anyone has tried. I'm done with it. Gonna have it towed and let someone else deal with it.

The dealership can now remove the lock plate. Then have the reprogram done so the fuel won't cutoff. See post #7. Problem solved for good, weak battery or not.

[dfunde01]

Since the original GM is dead and gone it appears that we are on on our own check book for repairs. Does anyone have a ball park for the dealer to fix? I have reached the end of my rope on this.

Dave

[Halnazz]

I personally took mine to a preformance shop and had him reprogram my fuel cut off speed to its max. I will go pick it up today. I called Chevy and they wanted to change the PCM and reprogram it. I would have lost my tune as well.