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Question: "Check Column Lock"

ICOMP

Well-known member
Joined
Sep 7, 2007
Messages
67
Location
Lawrenceburg, IN
Corvette
2007 Black Z51 Coupe and 2004 Magnetic Red Coupe
I just started getting this message on the DIC of my '04 coupe. Anyone ever had this pop up and is the car safe to drive?
 

timfitz63

Well-known member
Joined
May 15, 2010
Messages
1,146
Location
Pittsburgh / South & Centrl TX
Corvette
'98 Aztec Gold Coupe; '04 Millennium Yellow 'Vert'
Page 3-65 of the 2004 Owner's Manual says the following in its list of DIC Warnings and Messages:

SERVICE COLUMN LOCK (Manual Transmission Only): If the system that controls the locking and unlocking of the steering column does not work properly, have the vehicle towed to a dealer for service.

Of course, the Manual tells you to take the vehicle to a dealer for a lot of things... :eyerole That being said, the column lock is a funny animal that can be affected by something as simple as low battery voltage. You might want to review this thread, which contains some links to videos that capture a presentation by another forum member, Paul ("C4C5specialist"), about this topic. If your battery is old, you might want to consider replacing it; at least check the voltage and ratings per the information contained in the videos. It may solve the issue with the column lock.

According to Paul, the column lock bypass that became the 'band-aid' fix from GM is almost never needed. Once you check your battery, if you're still experiencing problems, you might shoot Paul a PM if he hasn't already chimed in to this thread; he's probably best-qualified to speak authoritatively on this topic. If the column lock releases, you might be able to drive the car, but I think there's an inhibitor that keeps you from exceeding something like 5 mph; if it releases and the inhibitor does not engage, you're probably fine to drive the car, since the column lock cannot engage while you're driving.
 

ICOMP

Well-known member
Joined
Sep 7, 2007
Messages
67
Location
Lawrenceburg, IN
Corvette
2007 Black Z51 Coupe and 2004 Magnetic Red Coupe
Thanks for taking the time to respond. It's great to be able to look to this forum for help, and I've learned that it can save me a few buks!!!


ICOMP :)
 

Toms007

Moderator
Joined
Sep 24, 2004
Messages
6,521
Location
Southwest Kansas
Corvette
2007 Atomic Orange Coupe
Have you checked your battery? As Paul points out in the videos, the battery is very critical. Paul makes a very good point that the battery needs to meet very specific specifications. Make sure that the battery you put in meets these specifications.
 

ICOMP

Well-known member
Joined
Sep 7, 2007
Messages
67
Location
Lawrenceburg, IN
Corvette
2007 Black Z51 Coupe and 2004 Magnetic Red Coupe
Come to think of it, a prompt did show up on the DIC immediately prior to the column lock prompt that said something like "charging system fault". Think the battery is going?

BTW, it is the original battery and the car has 62,000 miles. Thanks foir the response!

ICOMP :ugh
 

LLC5

Well-known member
Joined
Sep 28, 2004
Messages
2,299
Location
Wa.
Corvette
98 black 6spd convert.
Come to think of it, a prompt did show up on the DIC immediately prior to the column lock prompt that said something like "charging system fault". Think the battery is going?

BTW, it is the original battery and the car has 62,000 miles. Thanks foir the response!

ICOMP :ugh




It is very possible that low voltage from a discharged or bad battery is your problem, column lock procedures are extremely voltage sensitive. Have your battery fully charged, and then properly tested with a carbon pile load tester to see if it is still good (keep in mind that "fully charged" does not mean that the battery is good, only that it is ready to be tested). If you do need a new battery it is important to select a battery that has a minimum of 550 CCA (cold crank amps) and 120 RC (reserve capacity) rating, the RC rating is very important in C5's. Good luck with it. :)
 

timfitz63

Well-known member
Joined
May 15, 2010
Messages
1,146
Location
Pittsburgh / South & Centrl TX
Corvette
'98 Aztec Gold Coupe; '04 Millennium Yellow 'Vert'
Come to think of it, a prompt did show up on the DIC immediately prior to the column lock prompt that said something like "charging system fault". Think the battery is going...?

Most likely the battery, but it could be the alternator too...
 

ICOMP

Well-known member
Joined
Sep 7, 2007
Messages
67
Location
Lawrenceburg, IN
Corvette
2007 Black Z51 Coupe and 2004 Magnetic Red Coupe
It is very possible that low voltage from a discharged or bad battery is your problem, column lock procedures are extremely voltage sensitive. Have your battery fully charged, and then properly tested with a carbon pile load tester to see if it is still good (keep in mind that "fully charged" does not mean that the battery is good, only that it is ready to be tested). If you do need a new battery it is important to select a battery that has a minimum of 550 CCA (cold crank amps) and 120 RC (reserve capacity) rating, the RC rating is very important in C5's. Good luck with it. <img class="inlineimg" title="Smilie" border="0" alt="" src="http://www.corvetteactioncenter.com/forums/images/smilies/smile.gif" smilieid="1">
Thanks! I'll give that a shot...<br><br>ICOMP
 

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